Why is a minus times a minus a plus? Explaining it to first-year junior high students who struggle with positive and negative numbers using a number line

I have been asked by parents of first-year junior high students who were unable to answer well when their children asked, ...
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Addition & Subtraction Using Number Lines Worksheets | Math Practice Activities

Help students build confidence with addition and subtraction using number lines with this engaging, print-and-go math worksheet resource! This 17-page activity pack provides focused practice with ...