Grade 1 - A History Of The Earth

The History of the Earth: Supplemental Guide 6 | The Three Types of Rocks 109

Exercise Materials Details

Discussing the Read-Aloud (15 minutes)

Comprehension Questions Response Cards (Set Two) Consider rephrasing questions 2–4 to
allow students to answer by holding
up the appropriate card for igneous,
sedimentary, or metamorphic. For
example, a modified question 2 might
read, Which rock type is formed from
hot magma that cools and hardens?
[Igneous]

Word Work: Sediments

 Complete Remainder of the Lesson Later in the Day
Extensions (20 minutes)

Multiple Meaning Word
Activity: Sink

Poster 3M (Sink)

Syntactic Awareness Activity:
Conjunctions but

Vocabulary Instructional
Activity: Settle

Image 6A-9; chart paper, markers,

tape, index cards

Create a Horizontal Word Wall to

compare words related to sinking and

floating.

Three-Column Chart: Types of
Rocks

Image Cards 7–9; Instructional

Master 6B-1

Create a three-column chart to record

student observations of the different

types of rocks.

Forming Three Types of Rock Three colors of chocolate chips
(one bag per color) or three colors
of crayon shavings (one cup per
color); heat source or pan of hot
water, aluminum pan, three zip-
top bags, clear jar, aluminum foil,
Response Cards

Model the formation of igneous,

sedimentary, and metamorphic rocks

using chocolate chips or crayon

shavings.

Response Cards: Sets One and

Two

Have students use their Response Cards

when discussing the types of rocks and

how each type was formed using heat,

pressure, and/or time.

Advance Preparation

Bring in a glass jar, potting soil, red clay, and rocks to demonstrate

how sediments sink.

For the Vocabulary Instructional Activity, create a Horizontal Word

Wall by drawing a horizontal line from left to right on a large piece