Curated OER
Let's Measure
Third graders practice measuring different objects. They discover the concepts of ratio and proportion and practice converting numbers into the correct unit. They read stories as well to help them with the concepts.
Curated OER
A Formula for SI Catch-Up
In this SI units instructional activity, students read about converting from SI units to non-SI units. They are given a conversion chart and they use it to convert from one unit of measurement to another in seven problems.