The Rocky Mountains (Lightning Bolt Books)
Age Range: 6 and up
What Holds Us to Earth? A Look at Gravity (Lightning Bolt Books)
Grade Level: 1 and up.A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how doe...
What Floats? What Sinks? A Look at Density (Lightning Bolt Books)
A rock sinks in the water. A hot air balloon floats in the air. Many objects float and sink. But what makes them move this way? And how do people use...
Why Do Moving Objects Slow Down? A Look at Friction (Lightning Bolt Books)
A baseball player slides on the ground to tag a base. A toy car's wheels rub against the floor and slow the toy car down. Friction is at work all arou...
Red Everywhere (Lightning Bolt Books)
Age Range: 6 and up Look around you. Do you see a stop sign? Ripe strawberries or tomatoes? A fire engine? Red birds or flowers? The color red is foun...
Blue Everywhere (Lightning Bolt Books)
Look around you. Do you see a clear sky? Ripe blueberries? Blue birds or flowers? Your favorite jeans? The color blue is found in nature, in foods, in...
