Category: Geometry

Martin Luther King, Jr and social justice

We have 6 activities on Martin Luther King and the movement to a more fair and equal representation of Black lives in America. A timeline of KIng’s life; a timeline of the social justice movement; the history of Jackie Robinson; data on which monuments in the National Mall are most visited; a study of crowd counting; and an examination of the recent changes in the Bears Ears Monument size and the reasons for that change.

The James Webb telescope

 After launch, the telescope deployed on its 30-day, million-mile journey out to the second Lagrange point (L2). This video shows the deployment procedure, timeline, and location of the satellite during deployment. Is this telescope just a more modern telescope…

Before the holidays activities (19 ideas)

 Giant Macaroon Nutcracker – In 2013, Chef Andrew Yeo, built a giant macaroon nutcracker in a Boston hotel using given amounts of ingredients. Students try to figure out how much of each ingredient I will need to make a similar but much…

Will one roll be enough?

Students can use the man or the basket as a reference as they try to approximate the size of these gifts and how much wrapping paper will actually be needed. Approximation, surface area, reasoning explanation, and diagraming! An X-box is…

What can you tell about a snowflake?

As a snowflake falls from the sky, its crystal grows according to the humidity and temperatures of the air that it passes through. In this activity, students interpret a graphic that clarifies that growth and try to deduce what conditions…

Wrapping presents on the diagonal

In this activity students determine if this method for minimizing wrapping paper is actually more efficient then the traditional method. For a hands on learning experiment, have students actually wrap a small rectangular prism using any available paper in both the traditional and diagonal methods. Then let them compare the two quantities of wrapping paper and decide which method uses less paper and by what percent.

End of Daylight Savings time confusion

In this activity students try to figure out how time settings will change as they move from place to place and what variables are involved in the daylight savings time shift. Day length? Latitude?

Halloween activities – 13 activities

How well can you predict your candy haul? – Students consider how to determine their best predictions of their candy haul.  The math ideas of measurement error and percent error are introduced.  Students then predict their own Halloween candy collection…

Collecting the most candy

Use your student’s Halloween enthusiasm to do a study on volumes.  We’ve created an activity that asks students to calculate the volume of candy containers that are silly and intriguing.  Skip the cone and the sphere to make this activity…

Indigenous Peoples or Columbus Day

*** Two activities *** When Columbus landed in Guanahani (renamed San Salvador, Bahama Islands by Columbus), he began the European settlement of the New World. Guanahani was inhabited by the Taíno people and it wasn’t really a new world. In this…

Watson saves

Students use the Pythagorean Theorem with Ben Watson’s incredible tackle to figure out how far he must have run. Truly phenomenal play!

Fall Equinox 2021

Updated for 2021! Tuesday, September 22, 2021 at 19:21 UTC (which is the same as 3:21 am EST), will be the Autumnal Equinox.  It is the time of year when the imaginary plane that passes through the Earth’s Equator would also…