What do you estimate is the mass of a regular sized strawberry?

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Presentation transcript:

What do you estimate is the mass of a regular sized strawberry?

In this lesson you will learn how to estimate mass in grams by using benchmarks.

Let’s Review Mass is how much matter an object contains.

We can measure the mass of small objects in grams using a balance scale.

A Common Mistake Confusing mass with size ~1 gram~1 gram

Core Lesson What objects have a mass of about 1 gram?

What objects have a mass of about 10 grams?

What objects have a mass of about 100 grams?

What do you estimate is the mass of a small crayon? 10 g100 g~25 g

What do you estimate is the mass of a regular sized strawberry? 1 g10 g ~ 6 g

In this lesson, you have learned how to estimate mass in grams by using benchmarks.

Guided Practice What do you estimate is the mass of a plastic spoon? 1 g10 g

Extension Activities Name three objects that have a mass of about 1 gram.

What do you estimate is the mass of a basketball?

Which do you estimate has less mass – a balloon or a bag of feathers? Explain your answer.

Quick Quiz Which object has a mass of about 10 grams?  one carrot  one grain of rice  one small wooden block  a box of paperclips

Quick Quiz About how much is the mass of this small bag of popcorn?  50 grams  200 grams  20 grams  1,000 grams