Curated OER
Solve Story Problems: Sold! A Mathematics Adventure
Young mathematicians listen to the book Sold!: A Mathematics Adventure by Nathan Zimelman where they encounter ways to solve story problems. They then create and solve start unknown addition and subtraction equations. Resource builds in...
Pennsylvania Department of Education
Links Away: Looking Back and Moving Forward
Students explore fact families. In this math lesson plan, students use links to model a fact family. Students solve addition and subtraction problems.
Curated OER
Whistle Mixer
Learners engage in an easy way to practice addition and subtraction skills while moving in different ways.