Curated OER
A Whiff of Danger
Public health trainees read and write a summary of the article, "A Whiff of Danger". The article is not available through the link, but can be found on the National Center for Biotechnology Information website. After summarizing,...
Curated OER
Density
Students determine the density of different substances. In this physical science lesson, students rank them according to their density. They discover the relationship between volume and density.
Curated OER
Compare Two Numbers: How Many Times More Than...?
Explore the concept of "how many times" where the word "times" is defined. Learners will determine the product and quotient in a word problem. Then use manipulatives to solve the problem. Finally, they will write in their math journals...
Better Lesson
Better Lesson: Understanding Multiplication With Equal Groups
Third graders develop their understanding of multiplication by grouping objects into equal groups to model the factors and products.
Better Lesson
Better Lesson: Using the Multiplication and Division Relationship to Solve
Third graders can solve multiplication and division problems quickly by recognizing the relationship between the two operations.
Better Lesson
Better Lesson: The Multiplication and Division Connection
Third graders can solve multiplication and division problems quickly by recognizing the relationship between the two operations.
AAA Math
Aaa Math: Inverse Relationship: Multiplication & Division
This site explains the inverse relationship of division with multiplication. Gives problems and games to practice this skill in a fun and helpful way.
AAA Math
Aaa Math: Inverse Relationship of Addition and Subtraction
Explains the inverse relationship between addition and subtraction. Gives exercises and games to practice this skill.