Week 6: May 11-13*

Learning Goal:

I can describe sounds using waves.

Estimated Time for The Week:

45 minutes- 75 minutes

Type of Lesson:

Energy, Sound Waves

Materials for lesson:

• Paper
• Pencil or marker
• Long string or jump rope (optional)

Materials for Optional Practice:

• Large Bowl
• Plastic Wrap
• Sprinkles

Learn & Practice:

For the Google Slides to click-through the below directions, click here! (It includes pictures for the steps below.

Complete the following Mystery Science lesson to learn more about sound and sound waves.

1. Choose one or more of the following to learn more about sound waves!
   • Read more about the sound machine that was created to keep kids away!
   • Try this online oscilloscope!
   • Find out how old your ears are by listening to high pitched noises!
   • Try this experiment to “see” sound!
2. Reflect: Take a moment to reflect on your learning this week!
   • Can you draw a picture of sound waves from a high pitched instrument?
   • Did any part of this week’s lesson surprise you?
   • What questions do you still have about how sound works?

Learning Goal:

The students will be able to use the components of engineering through designing, problem-solving, and researching bridges.

I can research bridge building and create a bridge prototype that holds weight.

Estimated Time for The Week:

45-60 minutes

Materials:

• Art and building supplies found in your house:
  • Aluminum foil
  • Newspaper
  • Cardboard
  • Egg cartons
  • Popsicle sticks
  • Straws
  • Paper
  • Playdough
  • Molding Clay
  • Food or candy
  • Notebook paper
  • Pencil
  • Timer
  • Ruler (or nonstandard unit of measurement close to 12 inches like your forearm)
  • Toy car

Background Knowledge:

• Engineers are people who create or build things and test them to see if they work. There are many different types of engineers. Some build cars or buildings and some work on computers.
• Engineers who build bridges and buildings are called structural engineers. A structural engineer has to make sure the bridge is built sturdy and safe enough for people to cross in a variety of ways. Most use materials like concrete or steel.
• There are four main kinds of bridges: arch, beam, suspension, and cable-stayed. Go to the website here to read about the different types of bridges and see examples from around the world.
• Right Angle: an angle of 90 degrees, as in a corner of a square or at the intersection of two perpendicular straight lines.
• Acute Angle: an angle smaller than a right angle. The range of an acute angle is between 0 and 90 degrees.
• Obtuse Angle: an angle that is more than 90 degrees and less than 180 degrees.

Learn & Practice:

1. Watch this video on the different types of bridges.
2. Watch this video on why bridges are so strong.
3. Decide what bridge design you want to create for your prototype.
4. Criteria. Your Bridge must:
   • Be at least 12 inches long
   • Support 1-2 pounds
   • Hold the weight for at least 5 minutes
   • Contain right, acute and/or obtuse angles
   • A way to get an object on and off the bridge (ex. toy car, etc.)
5. Sketch possible designs of your bridge on a piece of notebook paper.
6. Create your bridge prototype using the materials you chose.
7. Test your bridge.
   • Is your bridge at least 12” long?
   • Does your bridge support/hold at least 1-2 pounds?
   • Does your bridge hold this weight for at least five minutes?
   • Does your bridge contain right, acute, or obtuse angles?
8. Answer the reflection questions below:
   • Did your structure meet the criteria of providing a “road way” for the “toy car” to reach its destination without falling off the track?
   • Would you have done something different or changed it in any way?
   • What materials were the most useful? Why?
   • What materials were the least useful? Why?
   • How does your structure relate to our everyday lives?
9. If your bridge design was not successful the first time, create a new design. You might even consider making a different bridge type.
10. If you want, send a video or pictures to your teacher with a description about the bridge you created and what happened with your test. They would love to see your work.