Computer Science Unplugged
Divide and Conquer—Santa’s Dirty Socks
The story "Santa's Dirty Socks" provides learners an example of a search algorithm that uses a divide and conquer system similar to a binary search algorithm. The included questions expand upon the concepts that follow the story.
Code.org
Bytes and File Sizes
A bite of bits. The first activity in a unit of 15 introduces the class to the byte. Pupils learn about other standard units for measuring file sizes, develop an understanding of relative sizes and the kind of units used to measure...
Code.org
Cleaning Data
"Clean the data!" "I did not know it was dirty." Introduce your class to the process of cleaning data so that it can analyze it. Groups work through a guide that demonstrates the common ways to filter and sort data. Pairs then...
Code.org
Creating Summary Tables
Let the computer summarize all that data. Pairs work together to learn how to create pivot tables by following directions in the online module. They then utilize the data collected from the beginning of the unit to create their own...
Teach Engineering
Building a Barometer
Forget your local meteorologist — build your own barometer and keep track of the weather with an activity that provides directions to build a barometer out of a narrow necked bottle, a glass, and some water. Using their barometer,...
Teach Engineering
Combustion and Air Quality: Emissions Monitoring
Help your class determine the types of pollutants coming from vehicle exhaust. Groups use an air quality monitor to determine the emissions from different vehicles, to gain knowledge about combustion energy, and to predict how the...
Teach Engineering
Portable Wheelchair Ramp Challenge
Ramp up the engineering design process in your classroom with an activity that challenges teams to design, build, and test a small-scale portable wheelchair ramp. The class develops design requirements, and teams test their designs...
Teach Engineering
Thirsty for Gold
In the last portion of the six-part unit, teams perform an experiment with gold nanoparticles to determine which sport drink has the most electrolytes. The nanoparticles are used as chemical sensors and fluoresce in different wavelengths...
Teach Engineering
Red Cabbage Chemistry
Using the natural pH indicator of red cabbage juice, groups determine the pH of different everyday liquids. As they work, pupils gain an understanding of pH that may help deal with contaminants in the water supply.
Teach Engineering
Exploring the Lotus Effect
The Lotus Effect ... is it not some kind of yoga pose. In the last installment of a nine-part series, young scientists observe the Lotus Effect on lotus leaves and water-repellent cloths. They observe how motion and damage affect the...
Teach Engineering
When Silicon Talks
Explore Snell's Law using thin films. In the fifth installment of a seven-part series, pupils solve a set of problems relating to Snell's Law and use this skill during an experiment requiring the collection of reflective measurements...
Teach Engineering
Design Step 4: Engineering Analysis
What is the main difference between an engineer and a technician? This is one of the driving questions in a plan that proves that analysis at every step of development is crucial to the engineering design process. The lesson...
Teach Engineering
Where Are the Plastics Near Me? (Mapping the Data)
The last activity in a nine-part series has teams create a Google Earth map using the data they collected during a field trip. Using the map, groups analyze the results and make adjustments to the map to reflect their analysis. A short...
TryEngineering
Boolean Algebra is Elementary
See how Boolean algebra relates to video games with a lesson that teaches young scholars how to use Boolean algebra to create rules for a virtual world. They test the rule base for consistency in groups.
Beauty and Joy of Computing
Nesting Lists
Create lists within lists. The second lab in a series of five in the unit has pupils develop a simple contact list app. The tasks within the lab build the need for an abstract data type. Individuals build more complexity into their...
Code.org
Image Scroller with Key Events
Discover how to embed images in lists. Scholars modify an existing app to include an image scroller in the 17th lesson of the series. They learn to refactor code and remove redundancies after modifying code.
Code.org
Identifying People with Data
How much information about you is out there? Scholars explore this question as they investigate data breaches and how these violations occur. They then take part in an activity where they research how easily people could get access to...
DiscoverE
Rubber Band Rovers
Get your learners interested in space exploration. Groups design space rovers using design software and then build prototypes of their designs. The farther the rovers can travel, the better. The catch? The rovers must be powered by...
DiscoverE
Build a Plankton Net
Give household materials new life by turning them into a plankton net. Scholars design and build a net to collect and filter plankton from water. They test out their creations by using glitter to represent plankton. The nets need to...
DiscoverE
Rocket Challenge
You might just be responsible for launching a future career in rocket science. Pupils use Alka-Seltzer® tablets as the power source for a film-canister rocket. These rockets must able to carry a clay payload and hit a target on a wall.
DiscoverE
Core Sampling
Simulate soil sample assemblages. Individuals create soil layers in a cup. They then use straws to collect core samples from these layers. What information can they glean from the core samples, I wonder?
DiscoverE
Pilot a Balloon
Balloons will go where you want them to. Young pilots first add paper clips to a balloon to make it neutrally buoyant. They then use cardboard to steer the balloon in different directions, taking air pressure into account.
DiscoverE
The Power of Graphene
When you think electric circuits, your pencil probably isn't the thing that comes to mind. A simple experiment lets learners test whether the graphene in pencil lead is a conductor or an insulator. If the LED bulb lights up, a conductor...
DiscoverE
Design a Wind Turbine
Discover the power of wind energy. Learners design, build, and test wind blades in a hands-on experiment. They analyze the results to determine if they can make any improvements before gathering as a class to discuss their designs.