8th Grade Science Guide

8.3: Ecology 3 Dimensions & Progressions

Unit 3

● I can trace the energy transformations beginning from the sun to the processes through photosynthesis. ● I can explain how matter is transformed from carbon dioxide and water into glucose and oxygen molecules in the process of photosynthesis. ● I can explain how energy

solidify the objectives of this unit.

is stored in molecules during photosynthesis.

Activity: Photosynthesis Gizmo

Objective

Overview

Materials

● Study photosynthesis in a variety of conditions. Oxygen production is used to measure the rate of photosynthesis. Light intensity, carbon dioxide levels, temperature, and wavelength of light can all be

● Gizmo

● Understand that oxygen is produced by photosynthesis. ● Determine how temperature, light intensity, and carbon dioxide levels affect rates of photosynthesis. ● Observe that the color of light can affect the rate of photosynthesis. ● Explain why photosynthesis works most slowly under green light.

varied. Determine which conditions are ideal for photosynthesis, and understand how limiting factors affect oxygen production.

Formative Assessment: 8.3.1 SEEd Formative Assessment

Activity: Joseph Priestly Jar Experiment (Candle, Mouse, Plant Combo)

Objective

Overview

Materials

● I can make inferences about results from an experiment.

● Students see the set of each of the experiments and then predict what they think happened. This is a great lead-in to

● Joseph Priestly Experiments Slide presentation ● Bill Nye Video shows the history of the experiment