This short video and interactive assessment activity is designed to teach first graders about counting rectangles, squares, and triangles in composite figures.

This short video and interactive assessment activity is designed to teach first graders an overview of rectangles, squares, circles and triangles.

This short video and interactive assessment activity is designed to teach first graders an overview of quarter-circles and semi-circles.

In this open-ended investigation, students use visualizing skill and work systematically to explore surface area. Learners use linking cubes to build three-dimensional objects with exactly 28 faces exposed. Ideas for implementation, extension and support are included.

This is a lesson plan that will help educators teach Kindergarten students about 2D and 3D shapes, how to identify, sort them and design their own using marshmallows and toothpicks. Assessments and Rubrics are included to assess students on identifying, sorting, and designing 2D and 3D shapes.The image used in the Image Title was a screen shot taken from the Youtube Assessment that is linked to the lesson plan. It is Titled "2D or 3D Shapes: Under the Sea Math Brain Break"  by Move and Groove Math It is licensed under CC BY-SA 4.0 

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This activity helps students develop concepts and language related to position by experimenting with the size and relationships between two circles in a qualitative way. They use terms such as outside, touching and overlapping. The Teachers' Notes page includes suggestions for implementation and discussion questions. Students then can move to a follow-up activity, 3 Rings, cataloged separately.

This short video and interactive assessment activity is designed to teach second graders an overview of lines, curves, vertices, and sides of 2d shapes.

This short video and interactive assessment activity is designed to teach second graders an overview of simple figure patterns.

This short video and interactive assessment activity is designed to teach second graders about counting vertices and sides in various shapes.

This short video and interactive assessment activity is designed to teach second graders an overview of rectangles, squares, circles and triangles.

This short video and interactive assessment activity is designed to teach second graders an overview of ellipses, trapezoids, rhombi, and polygons.

This short video and interactive assessment activity is designed to teach second graders about counting the number of different 2d shapes in a composite figure.

This short video and interactive assessment activity is designed to teach second graders about identifying parallel and perpendicular lines.

This short video and interactive assessment activity is designed to teach second graders an overview of quarter-circles and semi-circles.

This short video and interactive assessment activity is designed to teach second graders about identifying and naming 3d figures.

This short video and interactive assessment activity is designed to teach second graders about visually evaluating parallel lines cut by a traversal.

This activity helps students develop concepts and language regarding the size and positional relationship possibilities of three circles in the plane in a qualitative manner. They use terms such as overlapping, inside, and touching as they work systematically to find all possible arrangements. The Teachers' Notes page includes suggestions for implementation, discussion questions, and ideas for extension. This activity can be a follow-up to "2 Rings" cataloged separately.

This short video and interactive assessment activity is designed to teach third graders an overview of lines, curves, vertices, and sides of 2d shapes.