Curated OER
Sieve of Eratosthenes
Students discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.
Curated OER
Introduction to Friction
Students study the properties of the frictional force between two surfaces in contact. They inspect various phenomena in nature where friction plays an important role and demonstrate
Curated OER
Grandpa's Social Security
Students examine social security and how the process works at different ages.In this retirement lesson students determine how long a retired person has to live to get the same benefits at different ages.
PBS
Inventions
Use this lesson plan to discuss inventions that have changed your class's world and have impacted society. Middle schoolers investigate important inventions of their time and design an invention in a simulated business atmosphere. Modify...
Curated OER
Sizing Up the Supersize Croc
Students examine and compare traits of humans and crocodiles. For this crocodile lesson students use a ratio to estimate the height of a person and compare that to a crocodile.