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Grade 2

The Grade 2 curriculum builds on concepts introduced during the JrK-1st grade years.

In Grade 2, instructional time should focus on three critical areas:

  1. exploring the life cycle of various organisms;  
  2. developing ideas about the similarities and differences of various physical properties of liquids; and
  3. investigating the properties of various soils in an attempt to predict composition's affect on plant growth.
Unit Description Major Science Concepts
Animal Life Cycles Students observe and record the growth and metamorphosis of painted lady caterpillars. By observing other animals such as mealworms (beetle larvae) and guppies, students continue to develop the concept of life cycle in animals.
  • Animals have observable and predictable life cycles, including growth and death.
  • Some animals change appearance as the mature (metamorphosis) while other animals maintain a similar appearance and increase in size as they mature.
  • Mature off spring resemble their parents in physical characteristics and behaviors.
Liquids Students identify physical properties common to all liquids, examine how some properties differ among liquids, and develop an understanding of the ways liquids interact with other liquids and solids.
  • All liquids pour and take the shape of their containers
  • Different liquids vary in physical properties [such as color, cohesion ("stickiness"), viscosity ("thickness") and density ("heaviness")]
  • Solid objects in liquids either (a) float on the surface or part way down or (b) sink
  • Floating depends on properties of the liquid and on the shape, size, and weight of the object
Soils Students investigate local soil to discover its different components - sand, humus and clay. They test these soil components for characteristic properties as a scientist would and use the results to explore and predict the relationship between soil composition and root growth and plant development.
  • Soils have different properties such as color, particle size, water absorbency and cohesion.
  • Plant germination and growth depend upon the properties of soil.
  • Organic matter decomposes and becomes part of the soil.