Curated OER
Measuring and Comparing Length
First graders use rulers to measure in both standard notation and centimeters. In this measuring activity, 1st graders discuss the importance of a measuring standard. Students measure in inches and centimeters. Students compare inches to...
Texas Instruments
Texas Instruments: Is a Square a Special Case of Rectangle?
The definition of square can determine whether it is a special case of a rectangle. Using the Cabri Jr. application, students can get a feel for why its definition makes sense. Along the way, they get experience with perpendiculars,...
Texas Instruments
Texas Instruments: Is an Equilateral Triangle a Special Case of Isosceles?
The definition of isosceles triangle can determine whether an equilateral triangle is a special case of an isosceles triangle. Using the Cabri Jr. application, students can get a feel for which definition makes the most sense. Along the...
Primary Resources
Primary Resources: Measures
A huge collection of teacher resources to aide in the teaching of all types of metric measurement: length, distance, mass, weight, capacity, and volume. Activities include measuring, estimating, converting, investigating, and finding...
Khan Academy
Khan Academy: Measuring Lengths 2
In this exercise, students practice measuring lengths 2. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
University of South Florida
Fcat: The Shadow Knows (Ratio, Proportion & Measurement)
Young scholars use their height and the length of the shadow to determine the height of buildings. A great outdoor activity to learn about proportions and ratios.