We expect students to write in every subject area. Just like reading across the content areas, writing across the content areas is a key skill.
With the shift to common core standards and conceptbased learning, we are asking students to do more and more written work in math. They are expected to perform in writing on assessments to complete error analysis tasks, explain problems, justify solutions, and more. But, I've noticed that if we do not take a full day (or more) to explicitly teach this and practice it in context immediately, then we cannot expect our students to know what results we are looking for in their writing. They really are not comfortable writing out full responses in math until we model it, show them specific examples, and explicitly outline what is required. One of the best ways to do this is to offer a full class period or two in which you only cover writing expectations specific to math classes. Here are what I have found to be the basics to go over with kids during this lesson: Complete Sentences. Always.
They honestly do not ever expect to have to write in full sentences, because it's math class! I have now learned to incorporate "Explain in complete sentences" into the directions for any question I want them to write for.
You can ask them to offer at least three sentences (or more) when you are looking for a complete explanation of something. At first, they probably will not know how to finish those sentences, but that is why we go on to the practice afterward. Justify EVERYTHING.
Each statement that a student makes in writing must be supported. There are different forms of justification.
Give students examples of the different forms of "WHY" that we see in math explanations, and ask them to come up with samples on their own as you go forward. Remind them that each sentence can be followed up with a justification answering the question "why." Here are a few sample justifications that they could embed into an explanation: • Why did you use that process? • Why does that answer seem reasonable or not? • Why did you choose to do that? • Why do you think that? • Why is it an error? • Why will you start with that step? Include Examples and CounterExamples or a Picture / Diagram if Needed.
The key to a good math explanation is to be clear and complete. If students want to offer a drawing to support their explanation, this can be a great addition. Sometimes it helps. Along these lines, they can provide examples or counterexamples if it can support their writing.
However, the full sentences must always be present. Any pictures or examples are just supplements. Now, Practice It!
Here are some of the ways that we use written explanations in math class:
You can practice each of these types of written explanations with your students. Explaining a Mathematical RelationshipExplaining a Method, Approach, or Thinking ProcessExplaining a ProblemExplaining a Choice or Answer
Be sure that students justify each and every part of their explanation with WHY!
My favorite approach for this "Writing in Math" lesson is an introductory doodle note that goes into the characteristics of a good math explanation followed up by stations where students practice right away (using the above prompts and additional ones as well). The full lesson pack for that is available for purchase here if you want it all fully assembled and ready to go.
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4 Comments
Bridgette
7/13/2017 08:42:46 am
I've always required my high school math students to write in complete sentences there answers when the problem or task includes a question mark. This year I want more justification and supporting their ideas with details. This packet will 1) be a way for me to organize my lesson, 2) help me to "practice" station/group work at the beginning of the year, 3) make a much needed lesson accessible and engaging. The preview makes it seem like great review work for my Foundations and Algebra 2 students: they'll be able to practice the writing, which is the lesson, and not be hindered by the math. I have no problem paying for this.
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7/13/2017 10:17:36 am
Hi Bridgette!
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