Grade 3 Math Unit10.2 Counting Unit Squares to Find Area

Area on unit-square paper is a count you can see: the squares are already drawn, and the shape's area is how many of them it covers. Buddy the Bear lights those squares up one at a time and counts them as they glow. WHAT IS IN THIS LESSON (Unit 10.2, count unit squares to find area) Part 1 the square unit - one drawn square, all of them the same size Part 2 count the squares a shape covers - and leave out the sheet round it Part 3 the same floor measured with big squares and with small ones Part 4 build rectangles that cover exactly six, eight and twelve squares Part 5 compare floors by the squares they cover, whatever they look like Part 6 the squares INSIDE a floor and the line ROUND it are two numbers Part 7 practice: count it, compare it, and say which square you used HOW THE QUESTIONS WORK Eleven questions, each keeping its floor on screen while the three choices wait low in the frame. The video lights the squares, then leaves 2.8 seconds of complete silence with three bouncing dots so your child can answer out loud before the reveal. Seven ask how many square units a drawn shape covers, three ask which of three floors is the biggest or the smallest, and one asks what a floor whose squares do not fill a block is called - and each reveal counts the squares again on the picture instead of announcing an answer. The two wrong choices are the two mistakes this lesson is about: the line round the shape, and the whole sheet under it. WHAT YOUR CHILD WILL LEARN area is the number of squares a shape covers a square unit is one drawn square, and every square on the paper is the same count the squares inside the outline, not the sheet around it the same floor is six big squares or twenty four small ones - say your unit smaller squares always give a bigger number for the same floor a rectangle of six squares can be 1 x 6 or 2 x 3, and both cover the same paper turning a shape does not change its area two floors can have equal area and different shapes the squares inside are not the line round the outside COVERS THE LESSON PAGE (Unit10.2 "Count unit squares to find area") Learn: Intro to area and unit squares - Measuring rectangles with different unit squares - Creating rectangles with a given area 1 and 2 - Find area by counting unit squares - Compare area with unit squares - Create rectangles with a given area Practice: Find area by counting unit squares - Compare area with unit squares - Create rectangles with a given area Grade 3 (ages 8 to 9). US English narration and on-screen text. Aligned to CCSS 3.MD.C.5.b and 3.MD.C.6, recognizing area as an attribute of plane figures and measuring areas by counting unit squares. CHAPTERS 0:00 Hello from Buddy: count drawn squares 0:41 The square unit, and counting a shape 2:30 One floor, two sizes of square 4:03 Rectangles from a stated number of squares 6:20 Comparing floors by the squares they cover 7:58 The squares inside, the line round it 8:57 Practice: count it and choose 10:33 What we learned today