LEGO Wedo 2.0 Math Challenge

LEGO WeDo 2.0 Math Challenge

Frog vs. Tadpole

Skills Required:

Metric Length

Simplifying Fractions

Multiplying Fractions by Whole Numbers

What to Build: The Frog (4a) and the Tadpole (Guided Project 4), assembled so that the left legs of each point in the same direction as the right legs of each.

Other Materials Needed:

Meter Stick

String

The Challenge: Measure how far the Frog travels with a given number of hops and estimate how about how far the Tadpole will travel if taking the same number of hops.

Procedure:

1.To the nearest multiple of 6, how many mm long is the Tadpole’s back Leg (including the rubber piece)? ______

2.To the nearest multiple of 6, how many mm long is the Frog’s back Leg (including the “wheel”)? ______

3.What fraction represents the relationship between the length of the Tadpole’s back legs compared the Frog’s? (Make answer #1 the numerator and answer #2 the denominator, and simplify) ______

4.Have the Frog travel 10 hops on a bare floor. Measure and record the distance traveled in cm. If the frog doesn’t travel in a straight line, use string to mark the curve of its path and then measure the length of the string once you straighten it out. Distance traveled: ______

5.About how many cm should the Tadpole travel in 10 hops? (Multiply answer #3 by answer #4) ______

6.Have the Tadpole travel 10 hops on the same floor, then measure and record this distance in cm: ______

7.Was the distance traveled greater than, less than, or equal to the answer to #5? ______

8.Complete the chart below. First measure the frog cm traveled, then predict the distance the tadpole will travel in the same number of hops. For this prediction, you should multiply by the fraction in answer #3, and then, if necessary, adjust this answer based on what you discovered in steps #6 and #7.

Frog/Tadpole hops / Frog cm Traveled / Tadpole cm Traveled
Calculated Prediction / Tadpole cm Traveled
Actual Distance
7
12
5
15

Reflection: Were your predictions close to the actual Tadpole distances traveled______

Why do you think this was the case?______

______

Extra Challenge: About how many hops do you think it will take the frog to travel 3 meters?_____ About how many hops do you think it will take the tadpole to travel this distance? _____ Have each travel these distances and see how close your estimates were.

LEGO WeDo 2.0 Math Challenge

Frog vs. Tadpole (KEY)