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Science - 4th Grade
Standard 5 Objective 3
Students will practice using 2 different plant classification keys to identify species.
Classroom Activity Materials:
When a scientist discovers a new species of plant or animal, they dont create their own classification scheme. They will use an existing scheme which was created by grouping plants that share the similar characteristics. In this activity, the students will need to make choices between the similarities and differences between their object and the classification scheme.
1. Use science process and thinking skills
Pre-Assessment/Invitation to Learn
Have the students bring one or two leaves from home. In small groups have the students start classifying the leaves into different groups. Remind the students that they need to look for similar characteristics. The students will need to look at shapes of the leaves, how many leaves are on the stem and if the leaves have teeth or lobes. The students will need to justify their classification scheme and groups. As a class, discuss the students classification schemes and reasoning. Discuss that when a new species of plant is discovered scientists use existing classification schemes. The students will be using some today. (See performance assessment at the end of this unit to assess the students learning.)
Homework and Family Connections