A balloon in a bottle, building a lung and bubbles? Explore the positive properties of air, namely gases take up [...]

Compare two or more three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols. Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and symbols.

Mister C and the Science Crew have fun building their own heatless lava lamp. Explore what will float (or sink) with these density experiments.