Measurement and units (T3 W2)
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Measurement is a way to find out how big, small, long, or heavy something is. We use different units to measure things, like centimeters for length or grams for weight. Today, we will learn how to measure objects around us and understand the units we use.
Let’s measure the length of a pencil. If the pencil is 15 centimeters long, we can say, 'The pencil is 15 cm long.' We can use a ruler to find out how long it is. Remember, we start measuring from the zero mark on the ruler to get the correct length.
Now, let’s practice measuring together! Take a piece of string and a ruler. Measure the length of the string in centimeters. Write down your answer. If your string is 20 cm long, you would write, 'The string is 20 cm long.' Let’s share our measurements with the class!
On your own, find three objects in the classroom. Measure the length of each object using a ruler. Write down the measurements in centimeters. For example, if you measure a book and it is 25 cm long, write, 'The book is 25 cm long.' After you finish, we will discuss your findings.
Answer: Centimeters
Centimeters are used to measure length, while liters measure volume, kilograms measure weight, and seconds measure time.
Answer: The pencil is 10 cm long.
You express the length of the pencil by stating its measurement in centimeters.
Answer: An apple
An apple is a food item that we measure by weight, which is expressed in grams.
Answer: A ruler or measuring tape.
A ruler or measuring tape helps us find out how long the table is.
Answer: 100
There are 100 centimeters in one meter.
Answer: The string is 30 cm long.
You indicate the measurement of the string in centimeters.
Answer: A scale
A scale is used to measure weight, while a ruler measures length, a thermometer measures temperature, and a clock measures time.
Answer: Centimeters or meters.
Centimeters and meters are both units used to measure length.