# CCSS Math Standard: 4.MD.1

Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit. Know relative sizes of measurement units within one system of units including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a two-column table. For example: Know that 1 ft is 12 times as long as 1 in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1, 12), (2, 24), (3, 36), ….

• #### 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!