This is one of my students’ favorite activities. They love exploring the intriguing patterns and making discoveries, and they don’t even realize they are engaging in rigorous mathematics.
Students encounter the 100’s chart in the primary grades, but did you know that there is a wealth of arithmetic and algebra embedded in the chart for older students as well? You can use the 100’s chart to teach many math skills such as number operations, mental math, integers, functions, writing expressions, u