If we have a rectangle measuring 2cm x 3cm, the perimeter is 10 cm and the area is 6cm squared. (rectangle far left)
If we have a like form, that is 2 times as large, the perimeter will be 10x2, and the area will be 6 x 2 x 2 (or 6 x 2squared, or 6x4=24). This is because the area becomes twice a big in two directions. Following this logic, the rectangle to the right is 4 times as large as our original rectangle. So the perimeter is 10x4=40cm, and the area is 6x4x4 (or 6x16) We can check our answers by drawing the shape, with the correct number of units for the side lengths. This year Grade 7s future mathematicians, engineers, architects, artists, teachers and doctors displayed teamwork, focus, and perseverance in calculating and creating a model house to scale. They also had to calculate the number of roof tiles needed to cover the roof and the amount of paint needed to paint the walls of the actual house. Only one duo managed to ace all three tasks: Karen He and Marshall Leone (seen above) The other winning teams were:
Well done to all! Congratulations! Ms Yvette and Ms. Uta Chapter 9 (lessons 1-3), looks at the area of a parallelogram, triangle and trapezoid. Below is a video that reviews what we looked at in class. For additional examples and explanation, go to this website: Study.com Grade 7 Science students work in teams to come up with plans for managing natural resource use. They are identifying renewable and nonrenewable resources, which ones are available locally, and the environmental implications of each resource.
Watch the video embedded below, and in a GoogleDoc, answer the following questions. When complete, share it with Ms. Yvette. 1. Why is India's border with China strong? 2. Why is India's border with Pakistan weak? 3. What is the current name for East Pakistan? 4. What is out-sourcing? 5. Why/how does out-sourcing contribute to India's growing economy? |