Microsoft word - priority standard-earth, gr. 2.doc
• Curriculum Guide Earth Science Strand for Harcourt Science
Priority Standard(s) 3) Earth is made of matter (material) that has distinct properties and provides resources for human activity.
Student Outcomes Student Task’s and Assessments As a basis for understanding this standard, Unit B: Exploring Earth’s Surface students know:
3a) How to compare and contrast the physical
¾ Recognize and describe different kinds of
properties of different kinds of rocks; that rock is
rocks and soil and will infer about why the
composed of different combinations of minerals.
3c) That soil is made partly from weathered rock
¾ Identify ways people use rocks and soil;
and partly from organic materials. Soils differ in their
make a chart similar to the one found on p.
color, texture, capacity to retain water, and ability to
support the growth of many kinds of plants.
¾ Classify rocks using 2 or more attributes
they identified (p. B6, “Use Process Skills”).
• Scientific Background/Facts
¾ Investigate the question, “What Makes Up
¾ Rocks are composed of different minerals
Soil?” (Investigation Challenge, p. B8) and
and are classified into 3 groups: igneous
will write or draw their results in their science
rock forms when molten magma deep inside
journals and will discuss the procedures in
Earth solidifies below the surface or rises to
the surface; sedimentary rock forms when
¾ Set up an investigation similar to the one on
parts of older rocks and plant and animal
p. B8 and find out that different kinds of soil
material form layers that harden into rock
over time; metamorphic rock forms when
¾ Identify the steps needed to make adobe
existing rock changes due to extreme heat
bricks (p. B8, “Reading Mini-Lesson” on
arranging events in sequence) and then will
¾ Sand is made up of loose grains of minerals
draw and number pictures to go with each
¾ Topsoil is the uppermost layer of soil. Top-
(“Reading Mini-Lesson” on p. B18); point out
soil can contain sand, clay, and minerals,
that information is sometimes put into a
but is mostly composed of humus (this orga-
chart to make it clearer and easier to find
nic material provides plants with nutrients
¾ Clay is found in most soils; it is made up of
¾ Rocks near the Earth’s surface are broken
into smaller pieces by a process called weathering; this process takes place be-cause of effects of environmental factors.
¾ There are two types of weathering: chemi-
¾ Minerals are solid resources found in nature,
8-12 weeks; a suggested 3 day per wk./45 min.-1 hr. per day science teaching schedule, for the entire unit
on Earth science (also contains a chapter on fossils,
entitled “Earth Long Ago”; even though standard 3d
is not a priority standard, most children love to study
about fossils and dinosaurs). Can be taught any trimester.
Travis Unified School District Science Grade 2, Page 1 of 2 • Curriculum Guide Earth Science Strand for Harcourt Science Instructional Strategies & Materials Real Life Applications
¾ People use rocks and soil in different ways.
¾ Using small groups, pairs, or individually,
¾ Rocks are a kind of natural resource; a
have students do lesson investigation #1, p.
nature that people can use to meet their
Makes Up Soil?” on p. B8. Materials for
these 2 activities are on p. B2c and p. B8.
¾ Have students reinforce their own under-
¾ Rocks are used to make gravel for roads.
standing of the use of science tools (like a
¾ Sculptures can be made from rocks (see B7,
hand lens) by asking volunteers to model the
reference to Mount Rushmore and its histori-
skill for their classmates (works well for the
¾ Adobe bricks can be made from clay and
¾ Use Process Skill Tip Transparency B1-1 to
practice the skill of inference (see “Science
¾ U.S. coins are made from certain kinds of
¾ Provide a variety of rock samples and have
¾ People also use materials from minerals to
children practice classifying the rocks using
¾ Artists use natural materials like rocks, soil,
and water to create artwork for people’s
¾ Use charts like the one on p. B9 to summa-
rize what children have learned about rocks
Resources & Technology
Teacher’s Edition with links to other CA content
¾ Use the chart on p. B19 to help children
analyze the photos to identify properties that
¾ Have Read Alouds (see Literature Connec-
¾ Have students start a rock collection.
¾ Address science misconceptions-see “The
Harcourt Science Activity Video Harcourt Science Instant Readers CD-ROM Harcourt Assessment Guide SDAIE Manual/Support for ELL Free access to Internet Activities for Harcourt Science, http://www.harcourtschool.com Grade Level Equipment Kit for Grade 2 Bibliography, T59-61 Rock and mineral samples (box of these in Science Kits for Pilot Teachers-the green buckets) Travis Unified School District Science Grade 2, Page 2 of 2
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