Khan Academy
Khan Academy: Halves and Fourths
In this exercise, students practice identifying halves and fourths. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Equal Parts of Circles and Rectangles
In this exercise, students practice identifying equal parts of circles and rectangles. Students receive immediate feedback and have the opportunity to get hints, watch a tutorial video, and try questions repeatedly.
CK-12 Foundation
Ck 12: Elem Math: Identifying Semi Circles and Quarter Circles
[Free Registration/Login may be required to access all resource tools.] The video defines a semi-circle and a quarter-circle and answers a question determining which object is a semi-circle. The video is followed by a series of practice...
CK-12 Foundation
Ck 12: Elem Math: Counting Semi Circles and Quarter Circles in Composite Figures
[Free Registration/Login may be required to access all resource tools.] The video defines composite figures, semi-circles, and quarter circles, then uses those definitions to determine how many semi-circles and quarter circles are in the...