Elementary and middle school students can use Sketchpad activities to learn about relationships between numbers and early concepts of algebra. The following video shows an interesting activity which asks students to figure out the missing values of the shapes by using just their inequality relationships.

The downloadable Sketchpad activity as well as related information can be found at:

http://dynamicnumber.org/balance__reasoning_with_inequalities

*Sketchpad is a product of McGraw-Hill Education*