Length Detectives
The unit you would use if you are measuring the length of a soccer field.
What is a meter (m)?
A flat 2D shape with no corners and no sides.
What is a circle?
A basketball, a globe, and an orange are all real-world examples of this perfectly round 3D shape.
What is a sphere?
If you walk all the way around the outside edge of the school playground, you are measuring this.
What is perimeter?
Start at 90. Add 20. Subtract 5. What is the mystery number?
What is 105?
The number of centimetres on a ruler.
What is 30 cm?
This 4-sided shape looks like a stretched-out square. It has 2 long sides and 2 short sides.
What is a rectangle?
Because this 3D shape has flat, square sides, it can easily stack on top of another one without rolling away.
What is a cube?
This math word tells us how much flat space is inside a shape, like how much grass fills up a backyard.
What is area?
Start at 4. Multiply by 3. Double your answer. Add 1. What is the mystery number?
What is 25?
The measurement that is closer to the length of a chapter book: 20 cm or 20 m.
What is 20 cm?
This is the special math word for the straight lines that connect to make a 2D shape, like the 3 on a triangle or the 4 on a rectangle.
What is a side?
This is the math word for the flat, smooth surfaces on a 3D shape. A cube has 6 of them!
What are faces?
The perimeter of a rectangle with short sides that measure 4 cm, and long sides that measure 6 cm.
What is 20 cm?
Start at 8. Multiply by 5. Cut it in half. Subtract 3. What is the mystery number?
What is 17?
The width of your pencil box measured in cm.
(You can use a measuring tool.)
What is 12 cm?
This is the math word for the sharp corners where two straight sides meet. A square has 4 of them, and a circle has 0.
What are vertices? (What are corners?)
I have 1 flat, circular face on the bottom, but I come to a sharp point at the very top. I look like an ice cream holder.
What is a cone?
If Joan arranges chocolate pieces into 4 rows with 5 pieces in each row, she has this total number of tasty squares.
What is 20 squares?
You have 3 soccer balls. Multiply by 10 when a new box opens. Add 5 more balls. Divide them equally into 5 baskets. How many balls are in each basket?
What is 7?
If Rosie walks exactly halfway across a gym floor that measures 24 meters, the number of meters she has walked.
What is 12 meters?
I have 4 right angles and 4 straight sides. I am a rectangle, but all 4 of my sides are exactly the same length. What shape am I?
What is a square?
This 3D shape looks like a stretched-out cube. It has 6 faces, 8 vertices, and 12 edges, and all of its faces are rectangles.
What is a rectangular prism?
A square sticky note has a perimeter of 20 centimeters because all 4 of its sides add up to 20. This is the area inside that same sticky note.
What is 25 square centimetres?
Leo starts with 5 cookies. He bakes 10 times that amount. He gives 2 cookies to Jasper. Then, he splits the rest into boxes of 8 to share with the class. How many boxes does he fill?
What is 6?