2.1.D
Math2nd Grade
The Standard
communicate mathematical ideas, reasoning, and their implications using multiple representations, including symbols, diagrams, graphs, and language as appropriate
Texas Essential Knowledge and Skills for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students show a math idea in more than one way, such as with an equation, picture, graph, or words. They explain how the representations connect and what the result tells them.
What Mastery Looks Like
- Students show one problem with a correct equation, labeled drawing, graph, or written explanation. They clearly explain how the representations match and what the result means.
Common Misconceptions
- Students may write an equation that does not match their drawing. They may describe the steps they took without explaining why the answer makes sense.
How to Assess It
- Ask: “Show 14 minus 6 with an equation, a drawing, and words. Explain how your drawing proves the answer.”
Lesson moves
Ways to Teach It
Give pairs counters to model 12 plus 7, then have them draw the model, write an equation, and explain the result.
Ask students to write: “How does your picture show what each number in the equation means?”
Play a matching game with cards showing equations, diagrams, graphs, and explanations that represent the same situation.
Survey classmates about a favorite fruit, make a picture graph, and write two sentences explaining what the graph shows.
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