Science instructors sometimes avoid inquiry-based activities due to limited classroom time. Inquiry takes time, as students choose problems, design experiments, obtain materials, conduct investigations, gather data, communicate results, and discuss their experiments. While there are no quick solutions to time concerns, the phases of the 5E Learning Cycle—Engagement, exploration, explanation, extension, and evaluation—effectively mimimized time demands and formed the basis of the following lesson that teaches students about sunscreens and ultraviolet (UV) radiation.