Better Lesson: How Close Is "Close"?

"Life is more risk management, rather than exclusion of risks." -Walter Wriston. Scholars use provided mortality data to determine how likely it is a person will die from a particular cause. They compare the data to the perception of the...

Shuffle the resource into your lesson plan repertoire. Scholars use randomly-generated iPod Shuffle playlists to develop ideas about randomness. They use a new set of playlists to confirm their ideas, and then decide whether the iPod...

Exactly how small is a nanometer? Scholars investigate the scale of a nanometer by measuring classroom objects and converting these measurements to nanometers.

In a math or life science class, "mini-me" models are created with cardstock to reflect a 1:10 scale of students' bodies. Learners measure each others' heights with meter sticks, and then reduce the size by 10. After this exercise, they...

Is time on your side? Pupils come up with an experiment to test whether their classmates can guess how long it takes for 30 seconds to elapse. They divide the class data into two groups, create box-and-whisker plots, and analyze the...

Math is used in real life, and this lesson shows how with percent markups and markdowns. The page belongs to a four-part resource including guided practice and independent problem solving regarding percent problems. 

Aspiring astronomers study stars. They compare stars and explain the relationship between radius, mass, and diameter. By creating a star simulation, they discover how a binary star system's orbit can cause changes in the observed...

Which fraction is greater: 9/8 or 4/3? Students play the comparing game in order to develop strategies for comparing fractions.

Here's a powerful demonstration that makes the point that it is everyone's responsibility to conserve water and protect the earth's limited supply of fresh water.

How much is a million? This unit has a set of lessons investigating large numbers on the order of millions and billions. A culminating project has groups creating a slideshow and poster about large numbers found in the school and/or...