Learn how to use inverse operations to find the value of an unknown variable in an equation, so that the value is true.

The aim was to teach the formal solving method, which involved performing the same operations on both sides of the equation using, notably, the balance model. Analysis of students' reasoning showed ...

An n × n complex matrix A is said to be a reflexive (anti-reflexive) matrix with respect to the generalized reflection matrix P if A = PAP (A = — PAP). The reflexive and anti-reflexive matrices have ...

AI is accelerating a conversation around how math instruction should put more emphasis on using numbers to solve real-world problems.