2nd Grade Science

Three Village District Essentials

Structure and Properties of Matter

Structure and Properties of Matter

  • Different kinds of matter exist and many of them can be either solid or liquid, depending on temperature. Matter can be described and classified by its observable properties.

  • Different properties are suited to different purposes.

  • A great variety of objects can be built up from a small set of pieces.

Chemical Reactions

  • Heating or cooling a substance may cause changes that can be observed. Sometimes these changes are reversible, and sometimes they are not.

Interdependent Relationships in Ecosystems

Interdependent Relationships in Ecosystems

  • Animals depend on plants or other animals for food.

  • Plants depend on water, light and air to grow.

  • Some plants depend on animals for pollination and for dispersal of seeds from one location to another.

Biodiversity and Humans

  • There are many different kinds of living things in any area, and they exist in different places on land and in water.

Developing Possible Solutions

  • Designs can be conveyed through sketches, drawings, or physical models. These representations are useful in communicating ideas to other people.

Earth’s Systems: Processes that Shape the Earth

The History of Planet Earth

  • Some events happen very quickly; others occur very slowly, over a time period much longer than one can observe.

Earth Materials and Systems

  • Wind and water can change the shape of the land.

Plate Tectonics and Large-Scale System Interactions

  • Maps show where things are located. One can map the shapes and kinds of land and water in any area.

The Roles of Water in Earth’s Surface Processes

  • Water is found in the ocean, rivers, lakes, and ponds. Water exists as solid ice and in liquid form.

Optimizing the Design Solution

  • Because there is always more than one possible solution to a problem, it is useful to compare and test designs.

Engineering Design (for grades K-2)

Defining and Delimiting Engineering Problems

  • A situation that people want to change or create can be approached as a problem to be solved through engineering.

  • Asking questions, making observations, and gathering information are helpful in thinking about problems.

  • Before beginning to design a solution, it is important to clearly understand the problem.

Developing Possible Solutions

  • Designs can be conveyed through sketches, drawings, or physical models. These representations are useful in communicating ideas for a problem’s solutions to other people.

Optimizing the Design Solution

  • Because there is always more than one possible solution to a problem, it is useful to compare and test designs.