101 Questions
25 Billion Apps
Learn to use mathematics to your advantage! Using linear modeling, scholars predict the date and time the Apple App Store reaches 25 billion downloads. Considering the prize for the 25 billionth download was a $10,000 gift card, modeling...
National Nanotechnology Infrastructure Network
Size and Scale – Learning about Measurement
Can you visualize one billionth of a meter? It's not easy to understand the scale of a nanometer. Learners use a hands-on lesson to develop an understanding of the size of a nanometer in comparison to common objects. They walk away with...
Curated OER
How Does Radon Get Into Your Home?
Students examine their home and calculates the amount of ventilation found. They also compute the surface area of different objects. They determine what is needed to reduce the amount of radon entering the home.
Curated OER
How Does Radon Get Into Your Home?
Students complete an experiment in which they measure the radon level in their home. They examine the different types of units of measurement and practice using them throughout the activity. They calculate surface area on objects as well.
Curated OER
What is a Pico?
Learners label objects in their classroom based on mass and volume using the metric system. They examine the relationship between the numerical value and the corresponding metric unit.