Unit Detectives
If measuring a pencil, would you use centimeters or meters?
Centimeters!
Calculate the area of the shape miss Groot gives you
28
Calculate the perimeter of the shaded area Miss Groot gave you
3 + 3 + 3 + 3 = 12 units
Measure the object Miss Groot gives you to the nearest cm:
pencil is 16 cm
You are measuring how tall a tree is. Which measurement should you use: length, width, or height?
Height
If you measure the length of your desk, would it be better to use cm or m?
cm
Calculate the are of the shape miss Groot gives you
48
Calculate the perimeter of the shaded shape Miss Groot gave you
32
Measure the object Miss Groot gives you, including cm and mm if needed
Stapler is 18 or 18.5 cm
You are measuring the side of a soccer field from one goalpost to the other. Should you measure the length, width, or height?
Length
What unit would you use to measure the height of a door: meters or centimeters?
Meters
This shape is made of three rectangles on the grid paper. Count how many squares are in each rectangle and add them together to find the total area
18 square units (8 + 6 + 4).
Draw a rectangle on the grid paper. One side is 4 units long, and the other side is 6 units long. Can you count the perimeter?
4 + 4 + 6 + 6 = 20 units.
Liam is measuring one of his shoes. He finds that it is about as long as 5 paperclips laid end to end. If each paperclip is 2 cm long, how long is the shoe in centimeters
5 paperclips × 2 cm = 10 cm or 2 + 2 + 2 + 2+ 2 = 10cm
You want to find out how wide a classroom door is. Should you measure the length, width, or height of the door?
Width
What metric unit would you use to measure the distance between your school and the airport? Why?
Kilometers, because this is a long distance and kilometers are best for measuring distances greater than 1,000 meters
Here is a shape on the grid paper. Some squares are only half-covered by the shape. How many full squares and half-squares are there? Add them together to find the total area
12 square units (10 full + 2 from 4 half-squares)
This shape is a rectangle. The length is 5 units, and the width is 7 units. Can you label correctly what side is the width and length, and count the perimeter?
5 + 5 + 7 + 7 = 24 units.
length= longer side
Width= shorter side of the rectangle
Noah is measuring the length of the classroom floor. He finds that one side is 6 meters long and the other side is 4 meters long. What is the total length if he measures both sides of the floor?
6 meters + 4 meters = 10 meters
A shoebox is on a table. You want to measure how far it stretches from one side to the other. Which measurement should you use: length, width, or height?
Length
You’re measuring the width of a human hair. What metric unit would you use, and why?
Hint: Centimeters, Millimeters, Meters, or Kilometer
Millimeters, because the width of a hair is very small, and centimeters or meters would not provide enough precision for such a tiny measurement.
Here is a rectangle on grid paper. The perimeter is 20 units. The length of one side is 6 units. Can you count the number of squares inside the rectangle to find the area?
The rectangle has 6 rows and 4 columns of squares, so the area is 6 × 4 = 24 square units.
A rectangle has a length of 4 and a width of 3. What is the total perimeter?
3 + 3 + 4 + 4 = 14 units
A train travels 30 kilometers from Station A to Station B. Then it continues another 45 kilometers to Station C. How far does the train travel in total from Station A to Station C?
30 kilometers + 45 kilometers = 75 kilometers
You are measuring a bookshelf to see if it will fit under a window. Which measurement do you need to check: length, width, or height?
Height