How do you convert from one measurement to another? Pupils use unit rates to convert measurements from one unit to another in the 21st segment in a 29-part series. They convert within the same system to solve length, capacity,...

Drawing from a scenario of the history of the penny, learners write and solve a system of linear equations from a context.

Drawing from a scenario of the history of the penny, learners write and solve a system of linear equations from a context.