Teach Engineering
Package Those Foods!
Designing the right package — it's more than a pretty picture. Challenge small groups to design a food package. They must consider the type of food they are packaging and the package's ability to control the physical and chemical changes...
Exploratorium
Salty Pits
Yuck, does my deodorant kill that? To test whether deodorant is anti-bacterial, class members use petri dishes to grow control bacteria and bacteria from sweat, and then compare them to see if deodorant effects the growth.
Institute of Electrical and Electronics Engineers
Conveyor Engineering
Moving along the line. Class members research how a conveyor belt works in order to gain background information. Groups then design a conveyor belt that will carry a piece of candy four feet and along a 90-degree turn. The groups build...
Teach Engineering
Tippy Tap Plus Piping
Getting water to a tap requires an understanding the fundamentals of fluid flow. Groups design, build, and test a piping system to get water from the source — a five gallon bucket — to a tippy tap. The objective is to be able to fill...
Teach Engineering
A Shot Under Pressure
You've got to pump it up! Using the equations for projectile motion and Bernoulli's Principle, class members calculate the water pressure in a water gun. The pupils collect data on the number of pumps and distance traveled in order to...
Computer Science Unplugged
Marching Orders—Programming Languages
Computers need precise directions to complete a task. Class members experience what it is like to program a computer with an activity that asks one pupil to describe an image while classmates follow the directions to duplicate the picture.
Computer Science Unplugged
Treasure Hunt—Finite-State Automata
Introduce your class to the concept of finite-state automata with an activity that asks individuals to try to map their way to Treasure Island by taking different routes though an island chain. Each island has two ship sailing to...
Exploratorium
Motor Effect
The magnetic wire. Class members create a magnetic field by running electricity through a wire. The video included in the resource provides information on how this effect is used to make electrical motors.
Exploratorium
Modulated Coil
Transmit sound with an electromagnet. Class members follow the provided direction and build an electromagnet that will transmit sound though a cassette-tape player. As as extension they create an air core electromagnet and compare its...
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.
Computer Science Unplugged
The Orange Game–Routing and Deadlock in Networks
How is data able to move in a congested network? Groups simulate moving data around a congested network by passing fruit around a circle, following specific rules, until everyone ends up with their own fruit. Extension activities include...
Exploratorium
Pixels, Pictures, and Phones
Take a real close look at your phone screen. What do you see? Here's an activity that provides guidance on how to look at a smart phone screen in order to see the pixels and to see how the phone creates colors and motion on the screen.
Exploratorium
Penny Battery
Use pennies to light an LED. Class members follow the provided directions to build a multi-celled battery powered by pennies. Using stacks of pennies of varying heights, pupils control the voltage of the battery to light different colors...
Computer Science Unplugged
Card Flip Magic—Error Detection and Correction
I can find the error in an array of cards? After watching a demonstration class members search for the error is the provided cards. The resource provides a real-life example of using ISBN numbers in error detection and using check sums.
Computer Science Unplugged
Colour by Numbers–Image Representation
How do computers store and send images? Here's an activity that explains one way a computer can compress image information. Pupils decode run-length coding to produce a black and white image. Pairs then work together to code and decode...
Exploratorium
Groovy Sounds
Make music. Class members construct a simple record player using a paper cone and a pin. The resource provides a description of what is happening and why listeners can hear the sounds through the cone.
Science NetLinks
Green Roof Design
Green roofs aren't just eco-friendly — they are literally green with trees. Groups learn about the concept of green roofs in order to be able to design one. The groups design a 5,000-square-foot green roof for a fictional apartment row...
Teach Engineering
Beating the Motion Sensor
I bet I can cross the room without having the lights come on. Class members set up an experiment in which they try to determine what materials will mask motion detected by a sensor. Groups predict how materials will interact with light,...
Exploratorium
Sound Bite
Learners use their teeth for more than just eating. The activity shows class members how to send sound through their teeth by using an electric motor connected to a radio to generate vibrations. Biting on the motor transfers the...
Exploratorium
Oil Spot Photometer
Are these two light sources the same? Groups use a white card and a little cooking oil to create a photometer that allows for the comparison of two lights. The Inverse Square Law provides a way to calculate the actual difference in...
Computer Science Unplugged
Tablets of Stone—Network Communication Protocols
Show your learners that the game of Telephone isn't the only way messages get mixed up. Pairs transform into the sender and receiver of a message sent in packets. At least one pupil is the messenger who either delivers, delays, or fails...
Computer Science Unplugged
Codes in a Song—Modems
Let's listen to some codes. To understand how a modem sends binary numbers over a phone line, class member listen to the codes included in the provided mp3 files, translates the tones to binary numbers and then convert the binary numbers...
Exploratorium
Indicating Electrolysis
Sure, your learners know water is made up of two molecules, but watching them separate helps the class see the construction like never before. This resource provides directions on how to build a simple electrolysis device using a...
Exploratorium
Vocal Visualizer
Make sound visible with an activity that provides directions for how to build a vocal visualizer meant to create light patterns. Making noise into the visualizer causes a mirror to vibrate, reflecting a laser beam, and creating the...