Lesson Plan
Code.org

Number Systems

For Teachers 9th - 12th
Generating a system of shapes. Groups work together to create a number system using three different shapes as symbols. The groups should come up with the rules that generate all the possible permutations of the three shapes.
Lesson Plan
Curated OER

Base It

For Teachers 3rd
Third graders complete place value charts in the decimal system, the binary and Hexadecimal system. They discuss the contributions made by Ada Lovelace to computer language. They express the idea of place value with exponents.