Reflection: Developing a Conceptual Understanding Meiosis, part 2 - Modeling Crossing Over - Section 4: Independent Practice


When the gradual release model of instruction is done well, students should be able to work independently, with little to no teacher support.

I really like this lesson because it builds students' understanding by using visual aids, explicit vocabulary instruction and manipulatives to lead students to conceptualize the complex process of crossing over.  

By building the concept from the beginning of the lesson, with the visual animation then moving into the diagramming and teaching of explicit vocabulary instruction, students are given a chance to establish a base of understanding before moving into the portion of the lab where pipe cleaners and beads are used to deepen their understanding of the process.  After modeling the process, students are better able to respond with meaningful responses to the analysis questions.

The gradual release model is an effective way to build students' understanding and it lends itself to students being more able to demonstrate understanding of complex concepts. 

  The gradual release model of instruction
  Developing a Conceptual Understanding: The gradual release model of instruction
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Meiosis, part 2 - Modeling Crossing Over

Unit 5: Unit 2- Cells
Lesson 27 of 30

Objective: Students will model the process of crossing over in order to better understand how genetic variation results during meiosis.

Big Idea: Hands-on activities help students understand how variation occurs as a result of crossing over.

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5 teachers like this lesson
Science, meiosis, chromosome, haploid, crossing over, tetrad, genetic variation, dyad, sister chromatids
  45 minutes
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