Curated OER
Properties of 2D Shapes
Second graders determine how to name two-dimensional shapes by their properties. In this two-dimensional figure lesson, 2nd graders work in two groups. They work with the teacher to examine two-dimensional shapes and complete a...
Curated OER
Symmetry that is Basic and Beautiful
Young scholars explore lines of symmetry. In this symmetry lesson, students divide and combine shapes along basic lines of symmetry. Young scholars explore symmetry in real life objects.
Curated OER
2D Polygons and 3D Nets
Students compare and contrast two dimensional polygons and three dimentional nets by examining the differences in drawings. They create three dimensional shapes and label the faces, edges, and vertices. After creating the shapes, they...
Curated OER
The Sum of All Angles
Students add up the different angles using the angle addition postulate. In this geometry lesson, students differentiate between interior and exterior angles. They calculate the different angles for triangles and use proof to show their...
Curated OER
Various Volumes
In this volume worksheet, learners create different sized cubes and compare the sizes by pouring sand from one cube into another. Students follow 4 directions and reflect on their findings.