Curated OER
Square Corners
Which ones are square corners? As they learn more about shape attributes, be sure scholars understand the difference between a vertex and a square corner. After examining two examples, learners circle the 90-degree corners in 12...
Curated OER
Relating Space and Plane Shapes
In this mathematics worksheet, 1st graders identify which object in an illustration has a flat side the same shape as the box shown. Then they look at other shapes and identify the ones with a flat side, if any.
Better Lesson
Better Lesson: Attributes of 3 D Shapes Part 2
Second graders will identify the attributes of 3D shapes and measure the edges in inches and centimeters. This lesson contains a detailed plan and videos of students engaged in the activity.
Quia
Ixl Learning: Complementary Angles
Brush up on your math skills relating to complementary angles then try some practice problems to test your understanding.