“8EE5-LT 2” Activity
adapted from CPALMS Kicker Board Design.
Erlanger Town Hall is looking for entries of designs of Skateboard Kicker Ramp that will be used at the local skateboard park. A kicker skateboard ramp is one of the easier ramps to build, and doesn't take that much
money. Kicker ramps are a lot of fun to play on - perfect for launching yourself, getting some air and doing tricks. You can also easily use thiskicker ramp for bikes, or anything else! A beginner's kicker skateboard ramp is4 feet long, 4 feet wide and a foot tall.
1. What is the height of the beginner's ramp?
2. What is the length of the beginner's ramp?
3. What is the ratio of the height (rise) to the length
Erlanger will name the ramp they choose after the student's name. We arenow challenged with coming up with 3 kicker ramp designs. You willbe drawing 3 kicker board ramps. All the ramps must have the same steepness (slope). You choose the height (rise) and the length (run) but the width will always be the same (4ft). To complete this task you will create SIMILAR triangles with a slope of 1/4; RIse 1, Run 4 For example: If I wanted a Kicker Ramp to have a slope of 1/2 (Rise 1 and Run 2) I could create a Kicker Ramp that was 3/6 (Rise 3 and Run 6) because they are EQUIVALENT.
4. Click through the pictures below to look at some more pictures of Kicker Ramps.
KickerBoard Ramp Ideas 'safe search' :
CHECK OUT HOW TO BUILD:
How to build a Kicker Board Ramp '5 minute video'
6. On a separate sheet of graph paper you will answer the
A. Create a coordinate grid (using graph paper). The X-axis should be -30
to 30. The Y-axis should be -30 to 30.
B. Draw a kicker board with height of 1ft and length of 4ft (slope
is 1/4-rise 1, run 4). Shade in the
C.. Draw 3 additional, similar triangles (off of the line created from 1/4) to represent different kicker
board ramps. They must have the SAME slope BUT different heights and lengths. Make sure to label your RISE and RUN (SEE THE PICTURE AT THE TOP) ( If you are not sure how to do this you can watch this tutorial video on how to calculate slope and similar triangles)
7.. IF you were going to create your own Kicker board for use what are the advantages/disadvantages of a smaller kicker with a height of 1ft (rise) and length of 4ft (run)? What are the advantages/disadvantages
of a kickerboard with the same slope BUT a height of 6ft (rise) and a length of 24ft (run)?
8. Rob Dyrdek’s Fantasy Factory has a Kickerboard of 5/13 compare the slope of
this ramp to the slopes of your designs. Is it steeper? Less steep? Equivalent? Use the terms RISE RUN and SLOPE in your
*When you are finished submit your paper to your teacher. This assignment is worth 40 points.
ABSENT STUDENTS : http://www.mathops.com/free/a1le003.php (notes on slope)
Objectives: What should students know and be able to do as a result of this
Key understanding : Students should understand that similar triangles will have
the same ratio of rise to run (and therefore y = mx)
understand why the slope is the same between any points on a non-vertical
use similar triangles to explain why the slope is the same between any two distinct
Questions: What are the guiding questions for this lesson?
How can I accomplish the task of designing the next kicker
How can I set up the proportions? Why? Explain.
What do you already know about similar figures that may help you in setting up
What is a pattern you see? Elaborate.
Why do you think we are using the coordinate plane as our working
Prior Knowledge: What prior knowledge should students have for this
Students should be able to plot points on a coordinate plane.
Students should be able to solve linear equations.
Students should be able to manipulate literal equations.
Students should be able to set up and solve proportions.
Students should understand what similar figures are.
Students should understand the properties of a right triangles
CHECK OUT SOME NORTHERN KENTUCKY KIDS TRYING TO GET THEIR OWN SKATEPARK~