Grade 4Habitats and CommunitiesPulleys and GearsLight and SoundRocks and Minerals A1A Bird’s Home B1Powerful Pulleys C1Grey Tomatoes D1Volcanoes A2Amazing Builders B4Teeth on Gears C2Light Reflection D2Chocolate Rocks A5Camouflaged Pipe Cleaners B5Geared Up C3Bending Light D3Growing Minerals B6Twist and Turn! C4A CD Spectrometer D4Salt Damage C6Hearing Sounds D5Fossilized Rocks C7Reflectors and AbsorbersGrade 5Human Organ SystemsForces Acting on Structures and MechanismsProperties of and Changes in MatterConservation of Energy and Resources A1Deep Breathing B1Force vs. Distance C1Changing States D1Transforming Energy A2Eye Spy B4Egg Protectors C2Physical Changes D2Storing Energy A4Beating Hearts B5Earthquake-proof Buildings C5A Rusty Dilemma D3Air – a Heat Insulator A5Catch It!Grade 6BiodiversityFlightElectricity and Electrical DevicesSpace A2Fighting for Space B4An Air Cannon C2Tiny Lightning D1Day and Night A3Important Insects B5Curving Air C4Insulators and Conductors D2Phases of the Moon C6An Electric Generator D3A Continuous Tug-of-war C7A Graphite Circuit D4Feeling Weightless C8Series vs. ParallelPhoto Credits PCPhoto Credits