Unit 7 - Lesson 12 - Grade 8: Illustrative Mathematics

How many meter sticks does it take to equal the mass of the Moon?

If all of these meter sticks were lined up end to end, would they reach the Moon?

How many meter sticks does it take to equal the mass of the Moon? Explain or show your reasoning.

If you took all the meter sticks from the last question and lined them up end to end, will they reach the Moon? Will they reach beyond the Moon? If yes, how many times farther will the reach? Explain your reasoning.

One light year is approximately 1016 meters. How many light years away would the meter sticks reach? Label the number line and plot your answer.

What information would you need to be able to solve the problem?

Record the information your teacher shares with the class.

Answer the question “Which is taller, the Burj Khalifa or a stack of the money it cost to build the Burj Khalifa?” and explain or show your reasoning.

Which has more mass, the Burj Khalifa or the mass of the pennies it cost to build the Burj Khalifa? What information do you need to answer this?

What is a mistake you would expect to see others make when doing problems like the ones in this lesson? Give an example of what such a mistake looks like.