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Area and Perimeter Third Grade. Day 1. How Big is a Foot?. How big is a foot?. How Big is a Foot?. http :// www.youtube.com/watch?v=bWhWL1MET7A. What was the apprentice’s idea?. Build the Bed. Reflect on what the apprentice was thinking. Can we act this out?
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How Big is a Foot? http://www.youtube.com/watch?v=bWhWL1MET7A
Build the Bed • Reflect on what the apprentice was thinking. • Can we act this out? • Build the bed using the apprentice’s foot.
Build the Bed...Again • Cut out the King’s foot. • Build the bed again using the King’s foot! • Build it right next to the other bed.
Reflect • Why is one bed larger than the other? • Didn’t we use the same number of feet to make both beds? • Turn & Talk, then write a reflection.
How big is the King’s foot? • We will measure the King’s foot from the top of the big toe to the back of the heel.
Floor Tiles • Look at our classroom floor. • Each square on the floor is a tile. • We are going to give you a paper floor tile that will serve as a model.
Tile Observation • Observe everything you can about the your tile. • Discuss your observations. • Record your observations in your math notebook.
Math Congress Floor Tile Observations
How much space does the bed cover? • Use your tiles go determine how much space the bed covers.
Two ways to record square feet • There are two ways to record square feet. • Write these in your math journals. 18 sq ft OR 18 ft 2
What is Area? • Area is the amount of space a shape takes up. • Record the definition of area in your math journals.
Estimating Area • You are going to estimate the area of several shapes round our school. • Remember, an estimate tells us “about” how many. • You will estimate the area of each shape in square feet, using your color tiles as a tool.
Scavenger Hunt – Inside 3. Glass Window in hall 4. Bottom part of bathroom wall • Rectangular shape in hall • Tile design in hall
Scavenger Hunt continued… 7. Black Millionaire poster 8. Front Side of Book Cabinet 5. Exterior Door Window Pane 6. Water Fountain Rug
Small Tile Observation • Observe everything you can about the your tile. • Discuss your observations. • Record your observations in your math notebook.
Color Tiles • What is the area of one floor tile in square inches? • Work in your group to determine how many square inches are in one floor tile. • With a partner in your group, create a poster to explain how you found the area of the tile.
After test Only complete the area column
Day 6 - Finding Area in Square Inches Width Length 1
Day 8 – How Long? How Many? 2x3=6 4x5=20