The History of the Earth: Supplemental Guide 6B | The Three Types of Rocks 121

Note: Extensions may have activity options that exceed the time

allocated for this part of the lesson. To remain within the time

periods allocated for this portion of the lesson, you will need to

make conscious choices about which activities to include based

on the needs of your students.

Extensions 20 minutes

 Multiple Meaning Word Activity^5 minutes

Sentence in Context: Sink

Note: You may choose to have students hold up one or two

fi ngers to indicate which image shows the meaning being

described or have a student walk up to the poster and point to the

image being described.

1. [Show Poster 3M (Sink).] In the read-aloud you heard Gerry
   the Geologist say, “If you dump a spoonful of sand into a
   glass of water, for instance, you will see the sand gradually
   sink down and settle on the bottom of the glass, much in the
   same way that sediments settle on the bottoms of lakes and
   oceans.” Here, sink means to go down below the surface of
   mud or water. Which picture shows this?


2. A sink is also something in the kitchen or bathroom that has
   a faucet for water and a drain at the bottom. People use the
   sink to wash their hands and dishes. Which picture shows this
   type of sink?


3. Now with your partner, make a sentence for each meaning of
   sink. Try to use complete sentences. I will call on some of you
   to share your sentences with the class.

TThe Three Types of Rockshe Three Types of Rocks

6 B