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Published byMargaretMargaret Short Modified over 6 years ago
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Learning Outcomes I can develop ideas to build conceptual understanding of math process for my students. I can understand and apply the C-R-A approach.
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Calculate
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Are these equal? 1 = 13
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Which expression has the larger value?
10 + x x What are some possible answers that your students might give? What do the different responses speak about what students know and are able to do?
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? ? Why is math so hard? Different/changing rules Vocabulary
Math Anxiety
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You have just got a summer job mowing lawns
You have just got a summer job mowing lawns. You did a test run in your own yard and you mowed your yard in two hours. You plan on working 8 hours a day, how many lawns can you mow in one day? (Lawn sizes are the same)
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Fractions 1 ¾ divided by ½
Write a Story Problem to show what is happening with this expression. How would we teach this to our students?
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So what’s another approach?
Division of Fractions American Approach Flip and multiply Answers don’t match Confused dividing by 2 and ½ So what’s another approach?
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Bean Party 6 divided by ½
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For each Cup of Beans---
I get two portions if I divide by 1/2
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What if I divide by ⅓? How would my diagram look?
How many portions would I have? Why are my number of portions getting larger?
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Division of Fractions 1 ¾ divided by ½
Draw a model to represent and write a Story Problem to show what is happening with this expression. What was different writing a story this time compared to the beginning?
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Other Ways to Solve? Do we always have to invert and multiply?
Discuss the order of working with fractions - first whole number by fraction
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So where does invert and multiply come from?
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Algorithms Algorithms without understanding…
Errors practiced and hard to break Extensive practice time Limited retention Think negative numbers - number line and understanding is key Kids in Canada do not struggle as much because they are use to the temp
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Algorithms Algorithms with understanding… Conceptual development
Reduction in practice time Extended retention and application
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Misconceptions You will always divide the larger number by the smaller number Every time you divide, your result will be smaller Others?
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C-R-A Approach Concrete Representational Abstract
Manipulatives, real life, touch and see the math Representational Pictures, number lines, graphs, models, etc. Abstract Numbers and symbols
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Jigsaw Pick a topic from the list below, brainstorm ideas for how to teach this topic using the C-R-A approach. Will get in groups to plan and will then return to Home Group to share ideas. Negative Numbers Adding & Subtracting Decimals Linear Functions Graphing Coordinates Area/Perimeter/Volume Probability Mean/Median/Mode Your Choice
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Math Tasks There is so decision that teachers make that has a greater impact on students’ opportunities to learn and on their perception about what mathematics is than the selection or creation of the tasks with which the teacher engages students in shaping mathematics.
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Fraction Puzzle Determine the fraction of each puzzle piece
Reflection: Prior Knowledge? Access?
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Let’s Do Some Math
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CCR on ACT is 22 - 88.5% of the standards to receive between a 20-23 are from MS
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Building procedural fluency from conceptual understanding
A rush to fluency undermines students’ confidence and interest in mathematics and is considered the cause of mathematics anxiety
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Resources sudds.co achievethecore.org
Scaling Up Digital Designs Study through NC State Learning Map achievethecore.org Coherence Map
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Don’t Forget... All the resources you have....
The more you do it, the better you will be The more your students do it, the better they will be What to do when you don’t know what to do? Read, write, think, and talk in every class, every day Know your stuff and know who you are stuffing
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Enjoy the beautiful day!!
Resources found on my website Staff Math Resources - County PD - March 16th PD Fill out Evaluation Enjoy the beautiful day!!
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Resources NCSIP Math Foundations Deborah Ball’s Math Summit
NCDPI Math Wiki Sharon Griffin
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