Chrysalis

Life Cycles of Plants and Animals

3rd Grade

Living things have unique life cycles but similar stages of life.

• Compare models to identify common features and differences.

• Develop and/or use a model to represent amounts, relationships, relative scales (bigger, smaller), and/or patterns in the natural and designed world(s).

• Develop a simple model based on evidence to represent a proposed object or tool.

• Read grade-appropriate texts and/or use media to obtain scientific and/or technical information to determine patterns in and/or evidence about the natural and designed world(s).

• Describe how specific images (e.g., a diagram showing how a machine works) support a scientific or engineering idea.

• Communicate information or design ideas and/or solutions with others in oral and/or written forms using models, drawings, writing, or numbers that provide detail about scientific ideas, practices, and/or design ideas.

• Students identify similarities and differences in order to sort and classify natural objects and designed products. They identify patterns related to time, including simple rates of change and cycles, and to use these patterns to make predictions.

• Students measure change in terms of differences over time, and observe that change may occur at different rates. Students learn some systems appear stable, but over long periods of time they will eventually change.

• Reproduction is essential to every kind of organism. Organisms have unique and diverse life cycles.