1 / 21

220 likes | 356 Vues

Perimeter and Area. Yr 7. QCA, HBS, Ri. Pin-board shapes. Draw shapes on the pin-board by joining dots. Write down the following information for the shape: Count the dots around the perimeter (D.P.). Count the dots inside the shape (D.I.). Calculate the area of the shape (A.).

Télécharger la présentation
## Perimeter and Area

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Perimeter and Area**Yr 7 QCA, HBS, Ri**Pin-board shapes**Draw shapes on the pin-board by joining dots. Write down the following information for the shape: Count the dots around the perimeter (D.P.) • Count the dots inside the shape (D.I.) • Calculate the area of the shape (A.)**At home...**Conduct your investigation and write down any patterns relating the three variables that you find. Find a formula for the area of a shape using the dots in the perimeter and number of dots in the middle. Give reasons for why your formula works.**Does the number of dots in the perimeter give us the length**of the perimeter of the shape?**Who was Pick?**Georg Alexander Pick August 10, 1859 – July 26, 1942 Born in Austria, died in Bohemia, now Czech Republic**Pick’s Theorem...**… is not a relationship about perimeter and area! Teacher only**Pick’s Theorem**What did you discover?**Perimeter and area**Is there always a relationship between perimeter and area? Draw a shape with perimeter 24, what’s the area of your shape? What’s the smallest area you can make? Draw a shape with area 24, what’s the perimeter of your shape? What’s the longest perimeter you can make?**Activity**Ask pupils to investigate rectangles with the perimeter and area in the previous slide using their maths books (squared paper) Teacher only**Make your own match**In pairs, cut the sleeve of the old t-shirt. In the body of the t-shirt draw a shape that you can ‘sew’ the sleeve into – you cannot chose a circle. What is your guess of how it will look like? If you have time repeat with the other sleeve, with a different shape**Plan your design, draw the shape.**Cut out the shape to make a hole. Create your design by stapling the sleeve into your hole.**Perimeter, area, shapes and designing clothes**Can you explain your design process? How did you know you would be able to sew the sleeve into the hole? What shape was your hole?

More Related