District 11 Division of Operations & Instruction
Science

Grade 1: Pebbles, Sand, and Silt Unit

Overview
This unit is a Full Option Science System (FOSS) kit created by the Lawrence Hall of Science at the University of California, Berkeley. It is published and marketed by Delta Education. The four activities in this module introduce students to several kinds of rocks. Students sort, wash, compare and seriate rocks. They separate mixtures of rocks with screens and investigate clay and soil. After students have had many experiences with these earth materials, they participate in projects that demonstrate how people use earth materials in their daily lives.

Building Successful Foundations in Science - Elementary science integrates and organizes student scientific knowledge through a foundation made up of 'Bricks" of Big Ideas put together with the "Mortar" of Unifying Concepts.

Enduring Understandings - important ideas that students should carry with them years beyond the instruction received this year.

  • A common vocabulary is needed to communicate about the scientific procedure.
  • A well designed investigation involves the use of a written plan that identifies the materials to be used, the procedure to follow, and the variables. A plan needs to be followed to make sure all steps in an investigation are completed.
  • A scientist uses many tools when conducting an investigation.
  • Complete data makes it possible to explain the results of an investigation and compare it with the prediction.
  • When data is analyzed, the results can be communicated in a variety of ways.
  • Our senses help us learn about the world around us. Our senses enable us to classify and compare objects.
  • Materials can be mixed and separated given the appropriate tools.
  • Rocks can be sorted by size, color, shape. Soil is a mixture of humus, clay, silt, sand, and gravel.
  • Fossils are evidence of living organisms from many years ago that have been preserved.
  • Many building materials come from the earth.
  • Technology makes it easier to do work.

Essential Questions - most important “big picture” questions students should be able to answer after completing learning activities.

  • What common vocabulary should be used when conducting an investigation?
  • Why should we follow a plan when conducting an investigation?
  • What tools are available to gather data when conducting an investigation?
  • How does data help us explain our investigation? What are some of the ways we can collect data?
  • How can we communicate the results of our investigation to others?
  • How can we use our senses to learn about the world around us? What are some ways objects can be classified?
  • How can different materials be mixed and sorted?
  • What are the physical properties of rocks, soils, and minerals? What are some uses for rocks, soils, and minerals?
  • How can we learn about living things that we in existence long before us?
  • What are some building materials we get from the earth?
  • How has technology changed our lives?

Standards
Highest Frequency Standards High Frequency Standards Other Standards & E-skills

Standard 1: Students understand the processes of scientific investigation and design, conduct, communicate about, and evaluate such investigations. (1.a., 1.d.)
Standard 2: Students know and understand common properties, forms, and changes in matter and energy. (2.1.a., 2.1.c., 2.2.a., 2.3.c. )
Standard 4: Students know and understand the processes and interactions of Earth's system, and the structure and dynamics of Earth and other objects in space. (4.1.a., 4.3.b.)
Standard 5: Students know and understand interrelationships among science, technology and human activity and how they can effect the world. (5.a., 5.d.)
Standard 6: Students understand that science involves a particular way of knowing and understand common connections among scientific disciplines. (6.a.,6.d.) 

Other Essential Skills: Students are expected to:

  • develop a growing curiosity and interest in the physical world around them.
  • observe, describe, and sort earth materials based on properties.
  • separate earth materials by size using different techniques.
  • observe the similarities and differences in the materials in a river rock mixture: silt, sand, gravel, and small and large pebbles.
  • explore places where earth materials are found and ways that earth materials are used.
  • compare the ingredients in different soils.
  • acquire the vocabulary associated with earth materials.
  • Gain early experiences that will contribute to their understanding of several pervasive themes that relate one scientific idea to another: Structure, Change, and Interaction

Sample Lessons

District 11 Diamond Units/Lessons Overview - includes information about the purpose, goals and structure of these sample instructional units:

Vocabulary: shiny, silt, dull, humus, rough, gravel, smooth, pebble

Parents

 

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