Glow Math & Logic · Lesson 03
The parts change places
Explain why reversing two addends does not change the whole. Explore a model, explain the relationship, and try it with physical materials.
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PDF · Paid classroomGlow Math & Logic · Open lesson previews
Make a model.
Find a connection.
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Glow Math & Logic · Lesson 04
A gap to fill
Find a missing part by comparing a rod with the desired total. Explore a model, explain the relationship, and try it with physical materials.
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PDF · Paid classroomGlow Math & Logic · Lesson 05
Three parts make the same whole
Decompose one addend and preserve the original total. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 06
Give one and take one
Compare compensating changes in two parts. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 07
Build a track from a story
Identify the whole and both parts in a joining context. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 08
Check the puppet's count
Justify a total using unit marks instead of counting rods. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 09
Pairs of equal lengths
Compare a repeated part with counting every unit. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 10
A complete family of trains
Organize all unordered two-part decompositions of a small whole. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 01
Count on from the first rod
Use the first known quantity as a starting point for addition. Explore a model, explain the relationship, and try it with physical materials.
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PDF · Paid classroomGlow Math & Logic · Lesson 02
One more in the second part
Relate neighboring sums without recomputing both from zero. Explore a model, explain the relationship, and try it with physical materials.
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PDF · Paid classroomGlow Math & Logic · Lesson 03
Reverse and explain
Connect reversed rods to equivalent addition equations. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 04
The missing part in a teen train
Use the relationship between a whole and a known part. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroom