Grade 2 Science Connecticut Standards

Materials can be classified as solid, liquid or gas based on their observable properties.

Plants change their forms as part of their life cycles.

Earth materials have varied physical properties, which make them useful in different ways.

Human beings, like all other living things, have special nutritional needs for survival.<br /> This content standard is an application of the concepts in content standard 2.3 and should be integrated into the same unit.

Evaluate the nutritional value of different foods by analyzing package labels.

Explain that food is a source of carbohydrates, proteins and fats — nutrients that animals (including humans) convert to energy they use to stay alive and grow.

Use senses and simple tools (e.g., sieves and beakers) to separate soil into components such as rock fragments, water, air and plant remains.

Science and Technology in Society

Classify foods into groups based on their source, and relate common foods to the plant or animal from which they come.

Give examples of ways people can improve soil quality and crop growth (e.g., irrigation, fertilizer, pest control).

Design a fair test to compare the flow rates of different liquids and granular solids.

Use magnifiers to observe and diagram the parts of a flower.

Structure and Function

Conduct fair tests to investigate how different soil types affect plant growth, and write conclusions supported by evidence.

Describe the functions of roots, stems, leaves, flowers and seeds in completing a plant's life cycle.

Use senses and simple tools to observe and describe the roots, stems, leaves, flowers and seeds of various plants (including trees, vegetables and grass.)

Measure and compare the sizes of different solids.

Classify soils by properties such as color, particle size (sand, silt or clay), or amount of organic material (loam).

Properties of Matter

Classify objects and materials according to their state of matter.

The Changing Earth

Explain the importance of soil to plants, animals and people.

Measure and compare the volume of a liquid poured into different containers.

Conduct a fair test to explore factors that affect seed germination and plant growth.

Compare and contrast how seeds of different plants are adapted for dispersal by water, wind or animals.

Compare and contrast the properties that distinguish solids, liquids and gases.

Evaluate the quality of different soils in terms of observable presence of air, water, living things and plant remains.

Compare and contrast how different cultures meet needs for basic nutrients by consuming various foods.

Record observations and make conclusions about the sequence of stages in a flowering plant's life cycle.