The Common Core State Standards teach students the algorithm for multi-digit addition and subtraction in 4th grade. But some experts say it should be taught sooner.

They've created a math framework that borrows from the Japanese papercraft technique of kirigami (which uses strategic cuts to produce art) to transform any sheet into any shape.

The following are three examples of calculation strategies students might discover on their own if they were taught standard algorithms first and allowed to master them before moving on. Common Core ...

The centre suggests that to improve math instruction "schools must place a much stronger emphasis on mastering basic math skills and standard algorithms. Math curriculum guides must require the ...