What a bonanza for chemistry/physical science teachers this fall–first, the September issue of The Science Teacher (with the theme of Chemistry for a Changing World), and now the October issue of Science Scope (with the theme of Chemistry). No matter which grade level you teach, there will be ideas in both issues for advanced students and those who are novices at learning about chemistry.
Physical and chemical changes are difficult concepts for younger or less-experienced students. Check out activities with real-world applications: No More Leaks in which students explore super-absorbent polymers through an inquiry-based investigation, Korean Kimchi Chemistry which looks a chemical reactions such as fermentation, Watching the Pot to Improve Inquiry Skills (who knew that watching water boil could be so interesting!), Chemistry in Action: Triple Delight which looks at the chemistry concepts in making ice cream (but not in the lab – try the FCS kitchens), and Enhancing and Student Understanding of Physical and Chemical Changes with lots of examples for demonstrations. And if you ever wondered what inquiry-based science looks like in a classroom, the authors of Inquiry-Based Dissolving give you a peek into their classroom investigation, complete with a step-by-step description of the activity, questions, student discussions, photos and examples of student work.
How many of our students have been assigned the traditional “element report”? In the BI times (Before Internet), the main goal of this activity was to get students to find information about a particular element. This was usually accomplished in the library, using text resources. But today, with a few clicks in a browser (or better yet, a search in SciLinks with the keyword “periodic table”) students can get pictures and lots of information about the characteristics and properties of any element. So finding the information is not the exercise it used to be. Why would we ask students to copy facts about an element when the information is already and readily available? Consider the activities in That Is Not Where That Element Goes or The Element Walk as alternatives. If you go to SciLinks and search for “Periodic Table,” you’ll get many versions of the periodic table with information on each element (which could be used to make the cards for the above activity. Some of them are downright fun. The Poetic Table of the Elements has a traditional-looking periodic table, and for each element there are poems about it But it’s really fun to see what people came up with. In the Periodic Table Printmaking Project, artists created blocks for each of the elements. The descriptions of each element include some of its physical properties, but the interesting part is how and why the artists chose their designs. And I really enjoy the Periodic Table of Videos with a short video segment for each element.
Go to SciLinks for more resources to Explore Chemistry. Two of my favorites are Metals in Aqueous Solutions – a simulation that would be great if you have an interactive white board or other projection device and Biochemistry – Carbohydrates, which is part of a larger site on biochemistry with descriptions of other compounds, such as lipids, nucleic acids, proteins, and enzymes, in simple language.
As a former chemistry major, I’m really excited by these two issues!

I love the way two-year-olds inexpertly sniff, to sense an odor. They crinkle up their nose and snort, or gasp, and blink their eyes, not quite putting it all together to inhale through their nose. Yet they have an expert sense of smell—nothing comforts them like their favorite “lovey,” a much worn toy or blanket that has achieved a certain smell.
What did your grandmother’s house smell like—boxwood bushes along the sidewalk and old feather pillows on the window seat like mine? I loved the smell of those bushes but my father thought they smelled like cat urine! My great aunt used to light her late husband’s cigars because the smell brought his presence closer. Smelling muddy ooze left by a flooding creek brought the memories of my childhood closer, reminding me of watching the pattern of water-flow past overfull creek banks. The scent of lilac flowers reminds me of my childhood home too.
Scientists study the way smells affect people and our perceptions of smells. In the October Early Years column in Science and Children, I write about a smelling activity using lemons, cinnamon, onions, and coffee beans. In my ten+ years of using this activity, I have never had a student who was allergic to any of those foods. There is always a first time so I check every class.
Here are a few more ideas for engaging students’ sense of smell as they explore the world. Please teach the Safe Smelling method of wafting (waving) an odor towards your nose with your hand instead of sniffing directly from a container.

Cinnamon Shapes, a smell recipe

½ cup of cinnamon
½ cup of applesauce
2 Tablespoons of white school glue
Ground cinnamon lifts into the air very easily so monitor students closely as they slowly add the powder to the other two ingredients. Have the children touch each ingredient and talk about how it feels. Is it dry? Wet? Mix all three ingredients together and roll out onto wax or parchment paper to about 5 mm thick. Have children use a cookie cutter to cut out shapes. Roll out the scraps again and cut more shapes. Poke a hole near the edge of each shape so when they are dry, you can put a loop of ribbon through the hole to hang the shape. Youngest children can just make a pancake shape from a ball of dough. Even after completely dry (air dry for several days) the cinnamon smell is strong. This recipe makes about six small shapes.

Smelling, then planting herbs

What if you had to live in a small space for a long time with no windows to let in fresh air? Astronauts living in space breathe the same air over and over. A machine cleans the air and tries to keep the right balance of gases. NASA has many ideas for science activities, including one about using our sense of smell to identify herbs and spices. We can not be sure what’s in a container so it’s best to always smell substances the “scientific way”. Hold the open container about six inches away from your face, and with your free hand fan the air over the container toward you. The smell from the substance in the container will be mixed in the air and you will get a gentle sample of the substance—not enough to sting your nose or make your eyes water.
Some herbs are winter hardy in many regions and can be planted in the fall: oregano, thyme, sage, rosemary, and garlic bulbs. The children can rub the plants’ leaves to release the smell, and plant them outside to make a “smelling” garden. After the last frost date in spring (also see the USDA plant hardiness map), plant tender herbs such as basil, fennel, and dill. Much more can be learned from The Herb Society of America’s Essential Guide to Growing and Cooking with Herbs, edited by Katherine K. Schlosser (Louisiana State University Press 2007). See the society’s website.
Read these books aloud to open up discussion and introduce vocabulary to your class:

• Dog Breath: Horrible Trouble With Hally Tosis by Dav Pilkey (Blue Sky Press 1994). Young children may not understand the title’s play on words but they will get the humor of a dog with smelly breath saving the day. Ask your class, “When is our sense of smell useful?”
• The Happy Day by Ruth Krauss, Marc Simont (Illustrator) (HarperCollins 1949). Children can guess what the animals are smelling but they will be surprised!
• Smelling Things (Rookie Read-About Science) by Allan Fowler (Childrens Press 1991). An easy reader introduction to the sense of smell. Fowler’s books pair simple, pertinent details about the topic with informative photographs.
• Two Eyes a Nose and a Mouth by Roberta Intrater (Cartwheel Books 1995). In a book full of photographs and rhyming text celebrating the variety in human faces, one page with repeated photos of just one face catches our attention, asks us to “imagine how dull the world would be, if everyone looked like you or me” and reminds us “…the variety is just fine.” Young children will enjoy pointing to the part of our body that we sense smells with, or see/hear/taste with.
• What Can I Smell? by Sue Barraclough (Raintree 2005). Opening with the question, “What is your favorite breakfast smell?”, this book invites discussion of familiar smells.

Your class might want to write and illustrate a book about odors they have smelled—their favorites and the ones they do not appreciate.  Share your experiences with sense of smell activities….make a comment!
Peggy

I’m feeling really frustrated. I thought the students were following along in my first unit, but I am really disappointed in the test results. What can I do differently in the next unit?
—Lisa, Topeka, Kansas
The first unit is the toughest one. You’re learning about your students’ capabilities and background knowledge, and they’re learning about your expectations and requirements.
If the purpose of your test is to just record a grade for the students, it can be tempting to “curve” scores so more students receive a passing grade. It might also be tempting to assume students just blew off the test. But neither of these solutions addresses the issue of student learning.
Look at the test itself. How well do the items reflect the concepts and processes in the unit’s learning objectives? If you used a test from a previous year or one from the textbook, you might have to modify the number and types of questions if you emphasize different topics, expand on a topic based on student interest or needs, or cut some topics short in the interest of time. One of my favorite strategies was to ask the students, “What did you learn in this unit that I forgot to ask on the test?” It was interesting to see what students found memorable or relevant.
Are any items ambiguous or confusing, especially from the students’ perspective? This can be hard to determine; if the test had a lot of multiple-choice or short answers, I usually asked students to circle three items (the number could vary) they did not want me to count. They still had to answer the question, and they had to explain why they circled it. In some cases, they admitted they didn’t know the answer; other times they did not understand how the question was worded, and sometimes there were words in the question they did not understand. As I graded the tests, I kept a tally of the circled items. If any item had a lot of circles, it was a clue something was missing during instruction or I had written a poor question.
You said “I thought the students were following along…” Do you have any evidence of student learning during the unit? Formative assessments are ongoing, classroom level assessments used to discover what students are learning so we can move on (if students have learned a topic) or revisit our instruction to correct misconceptions or fill in gaps. These focused check-ups can provide just-in-time information during the lesson and can have many formats: frequent thumbs-up/down responses, a notebook/journal entry, warm-up or ticket-out-the-door activities, quick responses on a dry erase board or piece of paper, or electronic response systems. Even traditional quizzes and lab reports can be used formatively, assuming we provide feedback on the students’ learning (more than just a grade or percent correct) and use the results to improve or validate our instruction. (See the Ms. Mentor blog from September 2008 for more examples and resources).
Finally, do your students know how to study for a test? We often assume, especially at the secondary level, students have a wide range of study skills and they know how and when to use them. These can be faulty assumptions! We may need to guide students through note-taking and review. The generic “study skills” students were exposed to—skimming, summarizing, questioning, highlighting—may have to be revisited and fine-tuned for your subject or grade level. There are teachers who reinforce the value of having organized notes by encouraging students to use their science notebooks for a few minutes during (or at the end of) a test to find or check their answers.
I’d love to hear from you at the end of your next unit!

Rather than competing with the commercial hoopla around Halloween, perhaps we science teachers could do our own special celebrations that relate to science concepts. For example, it’s not too early to plan events for Mole Day, celebrated on October 23 (10/23) from 6:02 a.m. to 6:02 p.m. The timing of this event celebrates Avogadro’s number — 6.02 * 10^23 For more information on the concept of a “mole,” enter Avogadro into the SciLinks keyword search. You’ll get a list of websites related to moles and to the work of this scientist.
This day is also used to celebrate the science of chemistry and its applications. The National Mole Day Foundation’s website has background information, themes, and some suggested activities. The American Chemical Society has embedded Mole Day in its National Chemistry Week events. The ACS site has many resources for students and teachers of all grade levels.
The September issue of Learning and Leading with Technology has a product review of hand-held digital field recorders to create high quality sound files.
I’ve read of some websites that are worth a look: Biovisions from Harvard University has video clips and animations related to biology. Learn Bird Songs includes recordings to help you identify common bird by their songs. And Tech How-To: Podcasts has suggestions for creating and hosting original podcasts.
An online conference sponsored by the Smithsonian Institution focuses on the evidence, impact, and response to climate change. It features Smithsonian scientists, curators, and collections examining the issues surrounding climate change from a variety of perspectives. The conference is scheduled for 9/29/2009-10/1/2009 and it will be archived for later use.

July is a distant memory of 6am wake up calls for my high-schooler who took PE over the summer, balanced with my getting more than five minutes of peace and quiet—time to read about early childhood and science, to think my own thoughts and get hungry for conversation. Summer school is a wonderful thing and I thank all the teachers who work it.
July’s reading, Thinking BIG, Learning BIG: Connecting Science, Math, Literacy, and Language in Early Childhood by Marie Faust Evitt, with Tim Dobbins, and Bobbi Weesen-Baer (Gryphon House 2009—also the publisher of my book), has become September‘s lesson plans. This book of activities reinvigorated my thinking which was in limbo because a building move had one of “my” schools on tenderhooks about our opening date and the use of space. Aligned with national standards in reading, literacy, math, and science, Thinking BIG helps me see where the science activities I know and love can incorporate more language and math goals. With intriguing, classroom-tested activities which are insightful about children’s desire to explore and imagine, Evitt also meets teachers’ needs for activities which are possible, teach concepts, and come with detailed directions for how to implement. Her approach expanded my thinking—although I usually think of sprouting seeds as an early spring activity, Evitt explains that children are curious about the seeds they discover in fall from flowers and inside apples and pumpkins. The playful spirit throughout the book is so enjoyable—predicting how far popcorn will fly, playing air hockey, and making a giant rainbow! The authors understand that children are attracted to all things BIG and they will remember the concepts they learn through those activities!
Marie and I became penpals before her book was published, and we collaborated on a workshop for an NSTA area conference. She’s a fun presenter—look for Marie Faust Evitt and Mr. Tim at the NAEYC national conference in Washington, D.C. this November.
Here’s what I found especially useful in Thinking BIG, Learning BIG: Movement ideas, Insights into children’s thinking, Teacher-to-teacher tips, games, book lists, skills assessments, and Discussion Starter questions.

• Instructions that involve movement with language—clapping when first saying vocabulary words (SCAD system of “Say, Clap, Act out, Do again”), crouching down to “become” a seed and then sprouting a root (leg), and using American Sing Language to say the new word.
• Insights about children’s thinking are on every page. For example, when children graph, they want to remember which object they put on the graph so teachers should make the graphs big, or should I say, BIG. For example, if graphing favorite flavor of apple (green, yellow, or red), give each child an apple shape big enough for them to write their name on before they add it to the graph. The graph is poster size, made from more than one sheet of paper. In the seeds chapter, a “How Our Seeds Germinate and Grow” number line chart with days 1-12 (more age appropriate than a calendar) is used for both predicting if anything will happen with the soaked bean seeds, and recording what is actually observed each day.
• Teacher-to-Teacher Tips are full of details, specific information to implement the activities. In the Seeds chapter, Evitt recommends using pre-cut bean shapes for children who become frustrated if they have difficulty drawing their predictions and observations, and describes steps to teach children to draw the bean shape.
• The games and stories (used in every chapter) creatively convey concepts. Children predict which square on a grid will catch the most popcorn kernels as they fly out of the popper, and act out The Little Red Hen while learning about seeds we eat, and play a “Traveling Seeds” game to learn how seeds travel.
• An extensive book list for every chapter (sometimes 2+ pages!) with descriptions takes the guesswork out of which book to read.
• The useful Skills Assessments are in the form of questions directing the teacher to reflect on the children’s abilities and understanding: What kind of pencil grip does the child use? Can the child use the vocabulary? Does the child see the connection between the wheat seeds and flour? Can the child count correctly the number of dots on the card?
• Use the Discussion Starters (in the form of questions) to “spark children’s thinking during and after the activity”. Sometimes I write such questions on an index cue card so I remember to ask specific questions, such as “How many more days is it until we think we will see leaves?”

This book is going to help me make the transition to the new physical space and to incorporating more specific math and language focus during science activities. Hope you get a chance to view it online or at a conference.
Peggy

What an appropriate theme for the September issue! I’ve often wondered why field trips are usually scheduled in the spring when the fall is such a great time to be outdoors. And activities involving plants and animals are good ways to introduce students to scientific investigation and observation at the beginning of the year. These activities range from growing plants in the classroom or the schoolyard to studying bird habitats.
If you’re tired of the same old “scavenger hunt” activity, the article Forest or Field? has some good suggestions for how to make your field trip more meaningful by formulating questions to investigate, using activities prior to the trip to build background knowledge and experiences, conducting actual investigations during the trip, and analyzing data back in the classroom. I can imagine that this takes a lot of work, but I’m sure the experience is much more of a learning process than simply giving students a checklist. And your field trip can be part of your instruction, not just a social event!
When studying habitats, it’s easy to focus on the plants and animals, but we can’t forget the nonliving (abiotic) factors that influence the kinds of organisms that live there: elevation, types of soil, climate, rock formations, water sources, the terrain. Use SciLinks to find information on these abiotic factors to complement what students learn about the living things in a habitat.
How many of your schools are decorated with real pumpkins for the fall? The article Gourd-ous Decomposition shows you how to turn these decorations into a learning experience on plant life cycles, especially the process of decomposition.
I was excited to see so many references to SciLinks in the articles. As a summary, here are the links directly to the topics:

I always learn from each issue. For example, I had never heard of the term “thigmotropism” before reading the article How Plants Move. It’s a cool-sounding word that I’ll think of when I plant my tomatoes and beans next spring!

Do deciduous tree leaves in your area change color before they fall? On the occasion of the autumn equinox, here are a few books about trees and fall leaf colors that I have enjoyed reading to my students when we discussed the season’s change from summer to fall:

• Fresh Fall Leaves by Betsy Franco, Shari Halpern (Illustrator) (Scholastic 1994). A pair of children plays in fallen leaves in this simple early reader. Children love to share their own stories of playing in fallen leaves.
• I Am a Leaf by Jean Marzollo, Judith Moffatt (Illustrator) (Scholastic 1998). An early reader introducing the function of tree leaves.
• Red Leaf Yellow Leaf by Lois Ehlert (Harcourt Brace Jovanovich 1991). Colors! Maple tree lifecycle information! And an appendix with background knowledge for adults to read and share.
• A Tree Is Growing by Arthur Dorros, S. D. Schindler (Illustrator) (Scholastic 1997). Read in sections so young children are not overwhelmed with new information—perhaps a few pages each month as you follow the changes in a tree in your schoolyard. Many details of tree growth and life cycle are explained in sidebars, including photosynthesis.

And here is a new one, published this fall, which I look forward to sharing with my classes:

• Count Down to Fall by Fran Hawk, Sherry Neidigh (Illustrator) (Sylvan Dell Publishing 2009).

Tree leaf shape matching, counting from 10 to 1 (you will have to invent your own page for zero), and information about plant parts and animals that eat (parts of) trees—there’s a lot of natural science in this beautifully illustrated book. On the pages for numbers 3 and 2, the counting switches from the number of leaves to the number of points on the leaves, and to the number of leaves in the group that fall together—a fun change in pattern for fours and older who are listening closely but possibly confusing for others. The Sylvan Dell website has teaching activities to go with the book, including a list of the animals pictured in the book: bear, beaver, beetle, bird, butterfly, cat, chipmunks, deer, dog, elk, frog, grasshopper, lizard, moose, owl, possum, rabbit, raccoon, squirrel, and turtle. Perhaps the children can count how many animals they see in the illustrations as we read.
Tell us about a book on fall leaves that you use in your program by clicking on the word “Comments” below. The anti-spammer “capcha” box may not register your comment the first time you click “Submit Comment”—please type in the new capcha code that appears and submit again.
Happy Fall!
Peggy

The middle school where I teach just changed the topics taught each year to align with our state standards. My specialty is biology/life science, but now I’m also expected to address topics in earth and physical science. The inservice agenda for this year focuses on teaching strategies, but what I really need are crash courses in earth and physical science. I can’t go back to college—what should I do?
— Kaylee, Longmont, Colorado
Science teachers have two fields requiring continuing education—pedagogy and science content. In my school district, it was easy for our committee to plan professional development in teaching practices. Topics such as cooperative learning, classroom management, technology, curriculum design, inclusion, and assessment applied to virtually all subject areas. But science content was another issue. With only four secondary biology/life science teachers, it was difficult (and costly) to find facilitators to provide workshops or seminars on specific science topics. So once a year, we combined with teachers from other schools for the traditional “large group in an auditorium for a speaker” event. This approach to professional development was often irrelevant; research has shown one-shot presentations without any follow-up are ineffective.
Many of our students have IEPs (Individualized Education Plans) to meet their needs. Perhaps its time for teachers to create IPDPs (Individualized Professional Development Plans) for ourselves, particularly for content knowledge. Some districts offer such an option for self-directed learning. Teachers set their own learning goals, design a learning strategy, document their activities, and describe how they will apply the new content knowledge. The plans require prior approval (especially if the district is awarding official professional development hours) and usually teachers are excused from some or all of the traditional inservice programs. Perhaps you could offer to pilot an IPDP in your school.
I know a teacher who actually used a KWL (what we know, what we want to know, and what we learned) chart to explain her plan. The NSTA Learning Center also has a “PD Plan and Portfolio” tool to guide you through this process. It sounds like you already have a goal (updating your content knowledge and skills, and finding related resources and activities for your classroom), but keep it simple and do-able. Identify one or two content topics to start, perhaps the ones in which you feel least confident.
Learning strategies could include a variety of sources. Check your local colleges/universities for content courses appropriate for teachers to keep current on familiar topics or to learn new ones. However, introductory courses are usually labeled as undergraduate and may not count for certification or tuition reimbursement. Some colleges/universities do have “special topic” courses (including online ones) designed to enhance teacher knowledge.
Not all content learning has to be in a formal graduate course. Consider reading science journals or trade books (check out the suggested reading lists in the NSTA journals), watching TV programs related to science, listening to podcasts, or participating a professional learning community. Look for seminars or speakers at nearby colleges/universities or professional societies. Consider visiting a museum, zoo, planetarium, nature center, or botanical garden that offers programs compatible with your goals.
The resources at the NSTA Learning Center can help you, too. It would be easy to incorporate these into IPDPs, and many are free to NSTA members. The resources include free Science Objects, free online web seminars (most other professional organizations charge for these), and listservs. Did you notice how many of these NSTA resources are free for members? That is an educator’s favorite word!
Reading NSTA journals such as The Science Teacher, Science Scope, and Science & Children is an easy way to stay current on both pedagogy and content, and your membership includes online access to all of them, including the archives. If you need some quick information on an unfamiliar topic, use NSTA’s SciLinks to find websites with information.
Keep a record of your learning—in a journal, on your PDA, or on a form supplied by your school as documentation. You may be surprised at how informal professional learning can add to your content knowledge base.

All summer I was getting ready for the upcoming school year by collecting clear plastic jars and bottles with screw-on lids. Now they are on the shelf at school as “Discovery Bottles”, compact and beautiful, and (best of all) contained. (Click on the photo to view more photos of Discovery Bottles and other early childhood science activities.)
These containers hold objects that engage children’s interest and provide the materials needed to explore a topic such as magnetism, bubbles, or buoyancy. With a sealed lid small items stay inside, safe for young children and kept together to illustrate a concept such as liquids can float on top of other liquids (have different densities), some objects float and others sink, and different shapes move (fall) through liquids in different ways as they sink.
Here’s what I put in one:
Water tinted blue with food coloring, clean sand, small shells, sea glass, a key, and a few coins, and mineral oil. I wanted something to float at the boundary between the water and oil but when I tried a cork it also floated above the oil even though I had weighted it with several nails. So I put a few nails into a squishy plastic whale and it floated right at the top of the water. Then I poured in mineral oil up to the very top, put hot glue into the lid and screwed it down tightly. Tape around the lid is not really needed but it’s a good symbol for children that the jar is not to be opened.
Other ideas? The exploration of soil or sand in water could be adapted for very young children by putting each soil and sand sample into a separate bottle of water and sealing the lid. Shake and watch the particles float or sink, forming layers.
Older children can do an experiment as they construct a Discovery Bottle—see the article Discovery Bottles by Sandra Watson in the July 2008 Science and Children.
Peggy
ps: The early childhood community would like to hear from you! Add a comment by clicking on the word “comment” below. Hint: write and save your comment in a separate document to cut and paste in, because the anti-spammer “capcha” box may time out before you are ready to submit your comment. You may have to do it twice.