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National Security Agency
Backyard Building - Area and Perimeter
Turn young mathematicians into landscape architects with this four-lesson series on area and perimeter. Beginning with a basic introduction to calculating perimeter and area using non-standard units of measurement, this...
Rainforest Alliance
Colombia Biodiversity
How diverse is the rainforest? How much more diverse is a rain forest than a temperate forest? Explore these focus questions in a lesson that explores the plants, animals, and insects in forests. After listening to a reading...
Techbridge Curriculum
Calculating Rainwater Runoff
Thirsty plants soak up every bit of a rainfall, but what happens to the rain that hits the roof? Calculate the amount of rainwater from your school's roof with an Earth science activity, which brings measurement skills, observation...
National Security Agency
Time After Time
Save those precious minutes and hours spent planning math lessons with this mini-unit on telling time. Offering a series of engaging hands-on and collaborative learning activities, these three lessons teach children how to read...
Curated OER
All About Money
Few topics engage young mathematicians as much as learning about money. Through a series of shared readings and hands-on activities, children explore the US currency system, learning how to count money and calculate change as they create...
Federal Reserve Bank
Making Sense of the Ups and Downs of Prices
What are the consequences and costs of inflation? What is CPI, and how do we calculate it? This resource answers these questions in an organized and in-depth manner, and also includes a worksheet of follow-up questions designed for...