Bonneville
Designing a Solar Phone Charger
What a bright idea! Working in groups, scholars design a solar phone charger by applying concepts from the unit. They use solar modules and buck and boost converters in their creations, which must be able to charge a phone after...
Bonneville
Exploring Buck and Boost Converters
Boost one's knowledge of converters. The fourth of seven installments in the Off the Grid unit looks at buck and boost converters, which lower and raise the input voltage. Scholars apply the converters to adjust the output voltage to...
Bonneville
Designing a Solar Charger
The sun can even charge batteries. The fourth of five lessons in the Solar Transportation unit has pupils design a charger that uses solar modules to charge a 12-volt lead-acid battery. They estimate the charge that accumulates and...
Gfletchy
Geared Up
Get the class's gears turning! Pupils first watch a video that introduces the situation: Given three gears, how many turns will it take for the dots shown on the gears to line up? They count the number of spurs on each gear, then use the...
Gfletchy
The Clapper
Give a round of applause for completing the task. Scholars watch a video that shows an extremely fast clapper and a timer. The activity requires applying concepts of rates and proportional reasoning to estimate the number of claps in one...
Gfletchy
Rope Jumper
Jump at the chance to use the idea of rates. Young mathematicians watch part of a clip of a Japanese TV show where a contestant jumps rope as fast as possible. They use the data for the number of jumps and the number of seconds shown in...
Gfletchy
Deep Freeze
Warm up to the idea of subtracting integers. After watching a video where the contents of a cup instantly freeze when tossed into the air, pupils estimate the air temperature of Duluth, Minnesota (where the video was made). They then use...
Gfletchy
Thumbs on Fire
How fast are those thumbs? Pupils view a short video showing a person typing out a text message in a speed challenge. They use the information they can glean from the video to estimate the number of seconds it will take to completely...
Gfletchy
Fill ‘er Up
Drink in a lesson on volume. Individuals first view a video clip where a conical cup is used to pour water into a water cooler jug. Using provided dimensions of the cup and the jug, they estimate the number of cups required to fill the...
American Chemical Society
A Closer Look at Crystals
It's about to become crystal clear! Learners compare and contrast three different types of crystal substances. First they observe their structure and then investigate how they interact with various substances.
American Chemical Society
Mentos and Diet Coke!
Let the bubbles tell the story. Using a hands-on lesson, budding scientists learn how carbon dioxide in soda interacts with objects placed in the soda. The lesson explains how the gas adheres to the surface of the objects based on the...
American Chemical Society
Flame Out
Add a little heat to your science lesson. Young experimenters work to understand the chemical reaction taking place when a candle burns. They experiment with both oxygen and carbon dioxide to make conclusions about the reaction.
American Chemical Society
Time for Slime
Slime is more than just a fun pastime. Learners study the bonding of polymers using a mixture of glue, borax, and water. They then explore the properties of the slime and learn how the polymers in glue bond with ions in borax.
American Chemical Society
Dissolving M-and-Ms
Learning ... how sweet it is! A hands-on lesson uses colored candies to demonstrate how positive and negative charges interact. Pupils use different types of liquids and watch as the color from the candies spreads—or doesn't.
American Chemical Society
Diapers: The Inside Story
There shouldn't be any accidents with this activity! An inquiry-based lesson has learners explore the absorption properties of the gel compound in diapers. After testing its properties, they learn the science of the molecules that make...
American Chemical Society
Colors on the Mooove!
It does a mind good! Learners experiment with a combination of food coloring, detergent, and milk. They observe how the food coloring reacts with the different liquid combinations and relate their observations to the charges on the fat,...
Digital Public Library of America
Fannie Lou Hamer and the Civil Rights Movement in Rural Mississippi
Good primary resources, offering different perspectives on important issues and events, are hard to find. A packet of 12 primary source images, videos, audio recordings, records, and newspaper articles related to the 1960s civil rights...
Digital Public Library of America
Voting Rights Act of 1965
Despite the passing of the Thirteenth, Fourteenth, and Fifteenth Amendments, as well as the passing of the Voting Rights Act of 1965, the struggle to ensure fair voter registration and election procedures continues. Young historians...
Digital Public Library of America
The Underground Railroad and the Fugitive Slave Act of 1850
Escaping Enslaved people attempting to escape didn't need a ticket to ride on the Underground Railroad. Here is a packet of primary sources that reveal the kind of courage and determination they did need to face the challenges to gain...
Museum of the American Revolution
Through Their Eyes: Major Causes and Events of the American Revolution
Looking for an efficient way to explore the causes and results of the American Revolution? The American Revolution Museum offers a seven-lesson series to hit the highlights of this turning point, using primary sources and activities such...
National Woman's History Museum
Helen Keller--Citizen and Socialist
Do history books tell the full story of Helen Keller? The sanitized version of Helen Keller found in most textbooks leaves out her most provocative ideas. She was a socialist, fought for workers' rights, and advocated for the use of...
Digital Public Library of America
Frederick Douglass and Abraham Lincoln
Frederic Douglass and Abraham Lincoln, although dissimilar in their backgrounds, were united in their views about slavery. A set of 14 primary sources permits scholars to examine the views of these two powerful men.
Digital Public Library of America
A Raisin in the Sun by Lorraine Hansberry
A set of 14 primary sources provides background for a study of Lorraine Hansberry's drama, A Raisin in the Sun. Featured are images from stage productions of the play, white supremacy protests, a clip from a television interview, and...
Bonneville
Can Portable PV Charge Vehicles?
Take charge of learning about electric vehicles. Instructors first provide the class with information about PV modules and batteries. Learners then conduct an experiment where they connect PV modules in series and in parallel to...