An addition sort lets children see that different pairs can have the same total. Set out a few numbered turkey mats, then use equation feathers and counters to compare how each sum is made.
At a glance
Model one fact with counters, sort by the total, and look for two equations that belong together.
1. Start with two sums
Choose two nearby totals children have already met. Put out just a few equations for each so the search stays manageable.
2. Build the first fact
Show each addend with a different color of counter. Join the groups and count the total before placing the feather on its mat.
3. Sort a second equation
Have the child solve another feather and compare its total with the first. Ask whether the two facts belong on the same mat.
4. Compare reversed addends
Build 2 + 3 and 3 + 2 with counters. Slide the groups to show how the order changes while the total stays five.
5. Record one relationship
Write two facts that share a sum or draw how you know. Keep counters available if the child is still counting each object.
A classroom example
In a fictional first-grade group, Priya puts 1 + 4 under four. Her teacher asks her to move both groups into one row. Priya counts five and finds the correct mat.
Companion printable
The 20-page PDF includes 10 numbered turkey mats, 65 equation feathers, two recording sheets, setup directions, and a key.
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