# CCSS Math Standard: 3.MD.1

Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.

• #### Measurement: An Elephant

What if I told you that an elephant weighed a back-breaking 176,000? Could you figure out the unit I'm using? But… how many corgis would that be?

• #### Measurement: A Long Movie

What if I told you a movie was a whopping 0.017 long? Could you figure out the unit I'm using? This lesson packs in strange measurements of time as well as tiny decimals.

• #### Measurement: How Big is this Bathtub?

So, if I told you a bathtub holds 640 of water, which unit would make the most sense?

• #### Measurement: How Old Is Mr. Byrd?

What if I told you that I'm 341,640 old? Could you figure out what unit I'm using? Hint: it's not years!