American Chemical Society
Density: Sink and Float for Liquids
We don't think of liquids as floating typically, but a quick look at any oil spill tells a different story. Lesson explores various densities of liquids and why this fact is important. After observing the density variation, scholars...
Curated OER
The Real Number System
Learners analyze the real number system. They discuss real numbers, rational and irrational numbers, integers, whole numbers, natural numbers and more of the real number in the system. They differentiate between all these numbers.
Curated OER
Place Value: A Place for Apples
Second graders explore number values by completing math worksheets. In this place value instructional activity, 2nd graders identify the use of decimals in numbers and read a book about math called Apple Pigs. Students create number...