Why do some objects sink while others float? That’s the question young engineers tackle in a unit module of two lessons and three activities. With some help from Archimedes (and his principle) and the principle of buoyancy, scholars...

The point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...

A three-resource collection of teacher and student-friendly slides provides sixth graders with models of items on the Smarter Balanced assessments. Claim 2 offers 13 questions that assess problem solving. Claim 3 problems illicit...