The math series we use at my school (enVision Math) focuses heavily on the use of ten frames for visualizing numbers. I created these posters for year-long display in my classroom to help students conceptualize the numbers 0-20.
Each poster contains the numeral, written word, and a ten-frame visual for numbers 0-20. Red/yellow counters, such as those we use in the classroom, display each number. Larger numbers are shown with two colors to help students see what numbers make a larger number (5 + 4 = 9; 10 + 6 = 16).
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Hope these are useful in your classroom!