Curated OER
Exploring Centers of Triangles
Students explore properties of triangles using angle bisectors, incenters, circles, midpoints, and altitudes. They use Geometer's Sketchpad in order to create triangles and their properties.
Curated OER
Frozen Water Before? I'm Sure You Have; But I Bed You've Never Frozen Salt Water! Water!!
Students examine what happens to salt water when it freezes. In groups, they measure density and salt concentrations in different samples of water and record its freezing time. They discuss the relationship between water density and...
Curated OER
Words for Algebra
Students rewrite word problems using symbols. In this algebra lesson, students relate algebra to the real world. They identify the correct steps to take when solving word problems.