length, perimeter, volume, mass...2019/02/19 · measurement length, perimeter, volume, mass...
TRANSCRIPT
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MeasurementLength, Perimeter, Volume, Mass
Dynamic Learning Maps® (DLM®) PD WebinarCenter For Literacy & Disability Studies
February 19, 2019
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Initial & Distal Precursors
Across grades you will notice that many of the Initial and Distal Precursors are
the same given similar contexts.
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M.EE.7.G.4 G-GPE.7
Determine the perimeter of a rectangle by adding the measures of the sides
Find perimeter and area of squares and rectangles to solve real-world problems.
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But What Does That Mean!
In this case, measurement skills all start with the same foundation understandings.
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Attribute Values
• Color• Shape• Size
• Weight• Texture
Teachers will provide many opportunities for students to notice specific attributes of objects. Draw the students’ attention to new attribute.
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New Attribute
Attribute + Attribute + Comparison =Generalization
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Presenting the New Attribute
• Present item with attribute you want to teach
– Name the attributeBumpy
• Allow student to observe, feel or otherwise interact with the item naming the attribute every 10 seconds or so.
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Presenting the New Attribute• Present a similar item with
attribute
– Name the attributeBumpy
• Allow student to observe, feel or otherwise interact with the item naming the attribute every 10 seconds or so.
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Presenting the New Attribute• Then present a different item
with same attribute
– Name the attributeBumpy
• Allow student to observe, feel or otherwise interact with the item naming the attribute every 10 seconds or so.
• These three steps are presented during the same lesson.
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New Attribute Across Multiple Items
Remember to name the attribute. In this case:
Bumpy
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You can work on more than one attribute at a time, just not during the
same lesson.• Rationale: During the lesson we want all the
students attention on, what makes these objects that attribute, in this case, bumpy.
• In the morning lesson I might work on the attribute of texture or size and in the afternoon the attribute color or weight.
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Comparing across attributes doesn’t happen until the student has at least
two attributes he/she is familiar with.
Notice I didn’t say two attributes the student has mastered!
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Familiar Attribute
Now we build in expressive language and comparison with another familiar attribute.
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“Familiar” Attributes
Adults demonstrate the descriptive math language, bumpy and smooth, and demonstrate how the student might use their communication system to talk about what they are experiencing. Demonstrate symbolic language!
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This feels bumpy!
This feels smooth!
Not same
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This feels bumpy!
This feels smooth!
Different!
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This feels bumpy!
This feels smooth!
Bumps on it
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This feels bumpy!
This feels smooth!
Bumps not on it
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This feels bumpy!
This feels smooth!
All on here
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Attribute Values
• Color• Shape• Size
• Weight• Texture
Teach attributes through explicit instruction and repetition with variety but also take advantage of those incidental teaching moments. Pushing the
wheel chair over gravel. This is BUMPY. In the school hallway, this is SMOOTH.
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Distal: Recognize and DescribeMeasurable Attributes
• Once students are comparing attributes then we add the numbers through measurement.
– Counting– Measuring– Weighing– Capacity
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Examples
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Measurement Involves
• Identifying an attribute to be measured (e.g., length, mass, area)
• Then use definable, consistent units to find the “howmuchness” of the attribute.
It is important for students to engage in learning situations that help them understand different
measurable attributes and that teach them to measure those attributes in meaningful ways.
Ontario Education (2007). A guide to effective instruction in mathematics: Measurement.
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Continue to Build Language
• Use the math vocabulary for measurement (e.g., heavy/light, big/small, long/short).
• But also use the students communication system to demonstrate what they might say (given the words they have available to them all day every day) to talk about the attribute being measured.
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THANK YOU!
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