Curated OER
Lines of Symmetry
First graders create symmetrical designs using a computer program. In this lines of symmetry lesson plan, 1st graders review their symmetrical designs and discuss other ways symmetrical designs can be made. Students work in...
CK-12 Foundation
Ck 12: Elem Math: Determining Whether Given Shapes Are Rotationally Symmetrical
[Free Registration/Login may be required to access all resource tools.] Students watch a video to determine if given shapes have rotational symmetry and then take an assessment to test their skills.