Practice adding and subtracting within 20 using a Double 10-frame & number line. Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a marble game ...
Represent teen numbers with addition and subtraction equations involving one 10. Represent 10 using a number bond and 10-frame with a missing addend. Use Notice and Wonder with a 10-frame, connecting ...
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Boys and girls tend to use different strategies to solve math problems, new research shows
Among high school students and adults, girls and women are much more likely to use traditional, step-by-step algorithms to ...
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