Houghton Mifflin Harcourt
Challenge: Parentheses, Please!
Given a string of numbers and math symbols, learners take the challenge to insert parenthesis in the proper places to reach certain solutions. This is a challenge, indeed, an engaging enrichment for those who need a little more math!
Curated OER
Sums of angles in polygons
In this sums of angles in polygons worksheet, 5th graders find the value of x which is the angle that is not given in a polygon. Students complete 4 problems.