Curated OER
Add and Subtract to Get Four
Explore the many paths to get to four in this addition and subtraction instructional activity! Learners walk through the steps of the options: adding two numbers, adding three numbers, and subtracting two numbers. They examine which...
Curated OER
Equal To, More Than, or Less Than
As they examine 10 pairs of numbers, learners fill in the box between them to compare values. They use mathematical symbols to indicate greater than, less than, or equal to. The numbers are between 5 and 99. This drill-and-practice...