Watch the Moon orbit Earth and see each phase change. Click any phase to learn more, then test yourself in Quiz mode!
The Moon doesn't produce its own light — it reflects the Sun's light. As the Moon orbits Earth over 29.5 days, we see different portions of its sunlit side. This gives us the 8 phases we recognize.
Waxing means the visible portion is growing (New → Full). Waning means it's shrinking (Full → New). A handy trick: if the bright side is on the right (D-shape), it's waxing. If it's on the left (C-shape), it's waning!
This free interactive science tool is designed for elementary and middle school students. It uses visual animations, hands-on activities, and quizzes to help kids understand key science concepts. All content is aligned with Next Generation Science Standards (NGSS) and is completely free with no login or account required.
Interactive learning tools like this one help students engage with science in ways that textbooks alone cannot. By clicking, dragging, and experimenting, kids build deeper understanding and retain information better. Research shows that active learning leads to stronger academic outcomes compared to passive reading.
Explore the interactive elements above, then test your knowledge with the built-in quiz. You can retry as many times as you like. Teachers can use this tool on interactive whiteboards or assign it for independent practice. Parents can use it for homeschooling or after-school enrichment.
Last reviewed: April 2026