PBS
Pbs: The Lowdown: Percents Defined
Learn how to calculate percent as a rate per 100 in this video from KQED. In the accompanying classroom activity, students model percent with a 10 x 10 grid. After watching the video, they create a design or picture on a 10 x 10 grid,...
Texas Instruments
Texas Instruments: Science Today West Nile Killing More People
After studying the USA TODAY Snapshot? "West Nile killing more people,"students will compare the number of West Nile cases in the United States over the past three years. From the data, percent increases and decreases from year to year...
Climate Literacy
Clean: A Fossil Thermometer
In this activity, young scholars calculate temperatures during a time in the geologic record when rapid warming occurred using a well known method called 'leaf-margin analysis.' Students determine the percentage of the species that have...
TeachEngineering
Teach Engineering: How Much Sugar Is in Bubble Gum?
Most of the flavoring in gum is due to the sugar or other sweetener it contains. As gum is chewed, the sugar dissolves and is swallowed. After a piece of gum loses its flavor, it can be left to dry at room temperature and then the...
Illustrative Mathematics
Illustrative Mathematics: A Ced, a Rei Basketball
In this task, two brothers track how many games they have each won. Students are asked to make calculations based on the percentage of games won. They set up a rational equation (and a rational inequality) in one variable, and then solve...
Texas Education Agency
Texas Gateway: Chapter 7: How the Unemployment Rate Is Defined and Computed
By the end of this section, you will be able to do the following: Calculate the labor force percentage and the unemployment rate, Explain hidden unemployment and what it means to be in or out of the labor force, and Evaluate the...
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Percent Change Increase and Decrease
Get independent practice working with finding percent increase and decrease. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Northern Illinois University
Faculty Development and Instructional Design Center: Punctuation Quiz
A ten question punctuation quiz utilizing comma, colon, semicolon, and a period. If answered incorrectly, students are able to select a different answer. The percentage of accuracy from their first answer is calculated at the top.