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DO NOW
DO NOW
How tall is the tree?
How tall is the tree?
LEARNING TARGET
LEARNING TARGET
I can calculate the height of tall objects using shadows and what I know about proportional figures!
I can calculate the height of tall objects using shadows and what I know about proportional figures!
I DO
I DO
What do i need to know about this project?
What do i need to know about this project?
This project will replace a test as the summative grade for Unit 3 (meaning, it's worth a lot)
You will calculate the height of a tall object using a shorter object and the shadows of both. Both objects must be vertical.
You will present your findings to the class on Wednesday/Thursday of this week. Everyone should be ready by Wednesday.
This is the final grade for this trimester (grades will be submitted at the end of the week)
what information do I need to gather?
what information do I need to gather?
You will need to measure these things all close to the same time:
You will need to measure these things all close to the same time:
The height of the shorter object (such as you, or something else you can measure that is vertical)
The length of the shadow of the shorter object (from your feet to the end of your shadow)
The length of the shadow of the taller object (from the base of the object to the end of the shadow)
How do find the height of the taller object?
How do find the height of the taller object?
Using proportions and cross multiplication!
Using proportions and cross multiplication!
How should i present this information?
How should i present this information?
Check out this sample presentation. You can modify this presentation or make your own.
Check out this sample presentation. You can modify this presentation or make your own.
How will i be graded?
How will i be graded?
WE DO
WE DO
Let's go measure some stuff! You will need help to measure, but you may not work together on the project.
Please be cautious outside when measuring shadows. Look out for cars.
YOU DO
YOU DO
Begin your presentations! You can hand-write your math and take pictures for your presentation, or you can use a math editor to write your equations on the computer.
Google docs has an equation editor that's pretty good.
Exit ticket
Exit ticket
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