The perimeter is the distance around the outside of a closed 2D shape, space or area. You see the perimeter in real life on a football pitch or around a house to show its boundary. You can only find ...

Introduction Do you ever use math as a tool to solve interesting problems? In the 1970s math was often taught with simple worksheets. One teacher was looking for a way to help his students have more ...

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Back in August, Duolingo officially announced its new Math app following a teaser in 2021. Now Duolingo Math is finally available on the App Store for iPhone and iPad users – and as the name suggests, ...

In fourth grade, students focus most on using all four operations - addition, subtraction, multiplication, and division - to solve multi-step word problems involving multi-digit numbers. Fourth-grade ...

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