Flower Dissection

 

Grade Level:

3rd grade

Subject:

Science

“Flower Dissection”

Date:

9/23/08

Teacher: Brittany Burns

 

 

Objective:

The objective of this lesson is for students to locate and dissect the stamen, pistil, and petals from a flower blossom. Students will identify, display, and label these three parts of a flower onto a piece of white paper. The flower dissection will aid students in observations and also with the process of distinguishing different types of flowers. Students will observe and compare different flower dissections.

 

Education Standards Addressed:

Strand II, Standard I, Benchmark I: Recognize that matter has different forms and properties.

Strand II, Standards II, Benchmark I: Know that living things have diverse forms, structures, functions, and habitats.

Strand I, Standard I, Benchmark I: Use numerical data in describing and comparing objects, events, and measurements.

Strand III, Standard I, Benchmark III: Observe that plants and animals have structures that serve different purposes.

 

 

 

Materials/ Resources: Flower blooms, tweezers, white paper, clear tape, pencil, textbook, pictures of various flowers,  

Magnified glass.

 

 

Focus

Prior Knowledge:  Students will need basic background knowledge of the anatomy of a flower. Students must know how to count and use colors to distinguish between different types of flowers. They must be able to follow simple instructions for a scientific investigation, communicate observations, and answer questions. Students must understand that in science it is often helpful to work with a team and sharing findings. Students must also observe and describe the relative sizes and characteristics of an object (bigger, smaller, brighter, louder, etc). They also must be able to describe similarities and differences of flowers.

 

Prerequisite Skills:  Students must know how to use tweezers. They must be able to work and record data with other students. Students need reading for content and information skills.

 

 

Practice/Assess

Guided Practice:  Students will be shown how to use tweezers to properly dissect different parts of a flower. They will be told the different characteristics to look for in a flower which will be used to differentiate their flowers.

 

Assessment:  Students will be assessed by completion of dissection, proper identification and labeling of flower parts, and comparison of flowers. Completion of tasks and of self and group assessment of work.

 

Closure

Wrap Up: Students will finish the lesson by sharing their flower dissections with other students. They will compare and contrast their different flower dissections.

Independent Practice: Students will independently read about flowers in their textbook, look at given pictures of flowers, and observe their flower dissections.

 

 

 

 

 

 

 

 

 

 

Procedure:

 

1.)  Each student or pair of students will be given a flower bloom, tweezers, magnified glass, white sheet of paper, and clear tape.

2.)  Have the students locate the stamen, pistil, and petals of the flower.

3.)  With tweezers and fingers students are to remove the three flower part.

4.)  The students should tape these to a white sheet of paper and observe and label each part.

5.)  Using textbook and flower pictures, students are to determine what kind of flower they dissected.

6.)  If enough flowers are available, the students may also tape on the paper a complete flower for comparison.

7.)  Students will then share and compare their different flower dissections.