Reflection: Developing a Conceptual Understanding Modeling an Angiosperm Leaf (Part 2/2) - Section 4: Model Construction: What are the different types of plant cells and tissue?


Converting two dimensional models like microscope images into a 3-D model can be very difficult for students. In this lesson, students view multiple thin sections under the microscope. I have them look at images from two different directions: top and side. They do this in order to reconstruct a small section of leaf  and better under the 3-dimensional arrangement at the microscope level.  

There are many careers that require a good understanding of spatial reasoning. For instance, doctors must be able to look at MRI images. Architects and engineers use spatial reasoning when looking at blueprints. It could also be argued that increased spatial reasoning can also improve students' performance in science.  

By scaffolding how students learn about the cross-cutting planes seen in these microscope images and making them construct the 3-D rather than just showing them one, students better learn how all of the parts of the leaf work together. 

  Developing a Conceptual Understanding: Helping Students Develop Spatial Understanding
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Modeling an Angiosperm Leaf (Part 2/2)

Unit 6: Plants
Lesson 2 of 7

Objective: Students will construct a model of a plant leaf by collecting leaf tissue data from a coleus plant.

Big Idea: Students can understand multicellularity by modeling a plant leaf.

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Cells and Cellular Processes, Science, Organs, structure and function , Developing and Using Models, Constructing Explanations and Designing Solutions, Multicellular organisms, tissue
  59 minutes
hydrophytic leaf magnified and stained microscope slide
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