Education Development Center
Area Model Factoring
Introduce learners to what factoring represents and it's relationship to a square with a resource about factoring and the method of area models. The questions are scaffolded to begin with introductory questions and eventually have...
Illustrative Mathematics
Eight Circles
We are used to finding the area of a circle by plugging the radius into an equation. Here, learners are required to go further to find multiple areas and calculate the difference. They must detect a pattern in order to figure out the...
Just Health Action
Environmental Justice Matters: Mapping Environmental Justice Impacts (Part 1)
A case study of Seattle, Washington permits class members to compare and rank how different areas of Seattle are impacted by environment burdens. Groups investigate different zip codes, collect data on five categories, and color-code a...
Curated OER
Halves, Thirds, and Sixths
An excellent activity that effectively pulls together the concepts of area, fractions, and equivalent fractions! Using 3x2 rectangular arrays, 3rd graders are introduced to the concept of area in terms of square units. Building on this...
Illustrative Mathematics
Designs
A resource that makes for excellent group work as middle schoolers explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group...
Forest Foundation
The Nature of Trees
Young botanists examine the different parts of tress and then draw parallels between the functions of these parts and the function of parts of the human body.
BW Walch
Solving Linear Inequalities in Two Variables
Although graphing a linear inequality on the plane is but a few steps added onto the graphing of a linear equation, for many learners the logical leap is quite intimidating. This approachable PowerPoint presentation breaks graphing...
Curated OER
Feeling the Heat
Pupils record temperatures at different locations around campus. They examine the results and draw conclusions about how materials and colors affect the amount of heat produced. They also analyze Los Angeles' temperature records over a...
Curated OER
Sustainability
Here is an in-depth, and incredibly thorough lesson plan on sustainable agricultural practices; specifically, regarding the growth of coffee. After completing and discussing a worksheet called "Thinking About Tomorrow," groups of...
Curated OER
What Do Maps Show?
This teaching packet is for grades five through eight, and it is organized around geographic themes: location, place, relationships, movement, and regions. There are four full lessons that are complete with posters, weblinks, and...
American Chemical Society
Energy and Entropy of a Stretched Rubber Band
Stephen Perry invented and patented the modern rubber band in 1845. Young scientists put his discovery to work as they use rubber bands to observe entropy and enthalpy. They determine the change in free energy to figure out if it...