This document describes 10 formative assessment strategies that teachers can use to evaluate student understanding and modify instruction: 1) a colored paper sort to identify summative and formative assessments; 2) framing questions to assess understanding; 3) using toys and motion diagrams to describe motion; 4) task cards to practice graphs and diagrams; 5) a 4 corners activity to discuss motion; 6) game cards to review concepts; 7) a paper pass activity with diagrams; 8) versatiles and pick-a-holes review games; 9) wrap arounds for vocabulary; and 10) experimental design flippables. The document encourages teachers to implement these strategies to assess understanding and differentiate instruction.