Students identify the differences between non-renewable and renewable energy sources. They construct a PVC wind turbine and design a set of blades to extract as much energy as possible from low and high wind conditions.

Students describe the relationship between the tilt of Earth's axis and its yearly orbit around the sun, by learning about analemmas. They determine what they can do to show that the sun's position doesn't change, and they find ways to...

Students observe a piece of artwork by Rafael Ferrer that surrounds an archway. They discuss the sculpture and design an archway for the classroom door.

Students study and research irregular fractals and construct a few based on their research. Students practice pattern recognition skills and plane geometry skills calculating dimensions on the Fractured Pictures activity.

Third graders draw and interpret simple scale maps, use maps to move around efficiently or plans to propose actions. They use of a compass to specify and find directions. They display and discuss a map of the local region.

[Free Registration/Login may be required to access all resource tools.] Practice counting the number of angles in a closed shape in this learning module. Includes video demonstration of a sample problem [0:56] and practice questions.

Use theorems to prove ideas of inscribed and central angles in circles.

Use theorems to prove inscribed angles in circles.

Determine that all angles in a triangle equal 180 degrees.

Test your knowledge of the measurement of angles in a triangle.

Find missing angles in isosceles triangles given just one angle. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] Apply inscribed angle theorems.

Determine if angles in shapes and pictures are acute, right, or obtuse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

See this lesson to help students to learn about angles and identify the number of angles in 2D shapes. Lesson plans includes introductory activity, guided practice, and independent practice.

Students use pattern shapes to explore geometry and fractions, creating their own designs, or filling in outlines. As they work with the shapes students explore geometric relationships, think about angles, investigate symmetry, and...

Mattie and her four sisters are visiting a toy store. Can you help them find different shapes in the toy store?