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Doceri Creates New Teaching Strategies

Why Doceri?

Students need to learn to reason. Doceri motivates students. Doceri changes how students learn. Doceri changes the way students think.

How does Doceri do it?

Doceri creates new ways to analyze thinking.  In the previous blog entry we wrote about Mrs. Zora and how she uses Doceri to teach mathematical reasoning to her 6th graders. Mrs. Zora talked about using Doceri software to show multiple solutions to the same problem with different answers and replay the solutions back to discuss the different steps. The teacher can rewind the writing and drawing to replay the solutions step by step to analyze thinking, find errors, and fix them. Solving the problem in two or more ways provides a way to check work for reasoning and accuracy. Playing back the solutions helps the students see the process unfold more than once so that they can see when errors occurred in time and not just spatially on paper or a white board. With Doceri, a math problem can be solved directly over any kind of electronic file on the computer desktop.

In the Doceri video below, we tried to recreate how Mrs. Zora’s math lesson might look as a video. This video includes the following segments; all of which could be generally used in almost any math lesson:

0:00 – 2:08 The problem is solved the first way using dissection and addition.
2:09 – 3:00 The problem is solved the second way using dissection and subtraction.
3:01 – 3:17 The teacher compares the answers and sees that they are different, providing evidence that there must be at least one error.
3:18 – 4:58 The second solution is played back, and the error in the second solution is found and fixed.
4:59 – 5:11 The teacher compares the answers and sees they are still different.
5:12 – end The first solution is played back, and the error in the first solution is found and fixed. Now the answers match, and the problem is solved correctly.

 

Of course, in a classroom, the students could be speaking, explaining their work, and justifying their arguments. Doceri provides a scaffold for students’ thinking.

Here’s a different example that you could use with your own students. In the Doceri video below, a student wrote solutions to three problems involving the order of arithmetic operations. The catch is that the student used buggy algorithms and found the wrong answers. The video asks if you can you find all of the errors the student made and correct them. To you the teacher, we ask how you might use this (or a similar) Doceri lesson in your classroom?

 

What can you do?

Now it’s your turn. Send us your own Doceri files or videos, or tell us your stories about how you use Doceri in your teaching.  We know you have good ideas, and we want to help you share them. We’re listening.

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