Design and engineer each of these projects with your table team! Be ready to explain which part of the design and engineering process you are using.
1. Use the pulley and rope to balance 2 uneven loads on each side. What kind of load do you need to use to keep the pulley in a "balanced" still state?
1. Weigh each load with the scales attached to the pulley.
2. Write down the weight of each object that you have attached to the pulley ropes.
3. Figure out how to balance loads of unequal weights.
Each load must be different on each side, and you must find a way to balance them even when both sides are different weights.
2. Create a teeter totter and put bolts on each side. Create the base so that an odd number of bolts and an even number of bolts will balance the teeter totter. Example: 2 bolts on one side and 3 bolts on the other side of the teeter totter.
BUILDING CHALLENGE #2
USING THE MATERIALS GIVEN TO YOU:
1. Build a pulley system that can lift a block 2 feet off the floor. This pulley system must remain still for at least 1 minute without students holding the block up.
BUILDING CHALLENGE: BUILD A BRIDGE THAT EXTENDS OFF THE TABLE WITHOUT ANY OTHER SUPPORTS.
MATERIALS: 10 BOLTS, 3 RULERS
THINK ABOUT CREATING A "BALANCED" FORCE, THAT WILL NOT MOVE.
USE THE DESIGN AND ENGINEERING PROCESS TO IMAGINE, PLAN, CREATE, AND REDESIGN YOUR BRIDGES. HAVE FUN!!
I can find and solve a problem of unbalanced forces using the engineering and design model.
Imagine that you are designing a new kind of road that will help cars go further on a tank of gas. Test your theories with a marble. Test the marble on 3 different surfaces.
Which surface will cause the marble to go further with the same amount of force?
1. Mini Tug of War
a. Play 3 times each, and change the number of people on each side. First start with 1 vs. 1, then 2 vs. 1, then 2 vs. 2, then 3 vs. 2.
b. Keep score for each set of games and discover in which games you exerted equal force.
2. Gravity: Drop 2 different sized objects at the same time.
a. Predict which will hit the floor first and explain why to your partner.
b. Write down your observations of what happened.
3. Object push:
a. Partner Work: Each person will push on the same object.
b. Did the object stay still, or move? c. Why do you think this happened?
c. Write down your observations.