1. Measuring Length

2. Length Units The main unit for length is the meter or “cm” for short
There are also other smaller and bigger units like:
Millimeters or “mm” for short
Centimeters or “cm” for short
Kilometers or “km” for short
The units are how we label an answer

3. Length Tools/Instruments
The tool or instrument used to find length is either a ruler or a meterstick

4. Two sides of a Ruler
There are two sides to a ruler: centimeters and inches
In science you will NEVER EVER use the inches side!
The smaller/shorter dashes with NO numbers represent millimeters “mm”
The longer dashes with numbers represent centimeters “cm”

5. Finding the Length
Find the two big numbers that the line/object is between.
Use the lower of the two numbers. This is the first part of your answer.
Now count the dashes after the lower number. This is the second part of your answer
Take both parts of your answer and put a decimal between the two numbers
Label your answer with the unit centimeters or “cm” for short.

6. The nail is between ___5______ and ____6_____
I will use the _____5____ since it is smaller
3. I count ______1_______ dashes after the big number
Answer: ____5___.____1___ centimeters

7. The line is between ____3_____ and _____4____
2. I will use the ____3_____ since it is smaller
3. I count _____4________ dashes after the big number
4. Answer: ____3___.___4____ centimeters

8. The line is between _________ and _________
2. I will use the _________ since it is smaller
3. I count _____________ dashes after the big number
4. Answer: _______._______ centimeters

9. The line is between ____11_____ and ____12_____
2. I will use the ___11______ since it is smaller
3. I count ______6_______ dashes after the big number
4. Answer: ___11____.___6____ centimeters

10. The line is between _________ and _________
2. I will use the _________ since it is smaller
3. I count _____________ dashes after the big number
4. Answer: _______._______ centimeters

11. The line is between ____1_____ and ____2_____
2. I will use the ___1______ since it is smaller
3. I count ______8_______ dashes after the big number
4. Answer: __1_____._____8__ centimeters