Lesson Plan
Better Lesson

Better Lesson: Measurement: Comparing Dinosaurs

For Teachers 1st Standards
First Graders need to use direct and indirect comparisons to measure objects. Today they will use their new knowledge of dinosaurs to find the longest of the giant lizards.
eBook
Mathigon

Mathigon: Geometry: Circle and Pi: Degrees and Radians

For Students 9th - 10th Standards
Rather than dividing a circle into some number of segments (like 360 degrees), mathematicians often prefer to measure angles using the circumference of a unit circle - a circle with radius 1. This way of measuring angles is called...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg Toilet Roll

For Teachers 9th - 10th Standards
Picture a roll of toilet paper; assume that the paper in the roll is very tightly rolled. Assuming that the paper in the roll is very thin, find a relationship between the thickness of the paper, the inner and outer radii of the roll,...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Srt, G Mg How Far Is the Horizon?

For Teachers 9th - 10th Standards
Some friends are at the beach looking out onto the ocean on a clear day and they wonder how far away the horizon is. A second problem asks how far the horizon would be from the top of a mountain. Young scholars must also answer a...
Lesson Plan
Alabama Learning Exchange

Alex: Land Surveying Project

For Teachers 9th - 10th
This project resulted from of the collaboration of a computer aided drafting teacher, Chris Bond, and a math teacher, Lee Cable, (Hewitt-Trussville High School) to provide higher math expectations in CT and real life application in...