Curated OER
Handy Measurement: Using Non-Standard Measuring Tools
Students examine different types of non-standard measurement. In this measuring lesson, students utilize their fingers, palms and feet as measuring tools. Students discuss the difference between measuring using parts of their body and...
Curated OER
Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of math...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percents Are Ratios
This Math Page tutorial explains how percents are ratios and then features a practice exercise.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Multiply and Divide Fractions
This Math Page tutorial explains how to multiply and divide fractions and then features a practice exercise.