Building a two-digit addition anchor chart (Year 3 real example)
You've just taught 24 + 13 in three different ways.
Live, on the chart (don't pre-make this):
Top of chart: "Ways to add two-digit numbers" (title, big, clear)
Strategy 1: Tens and ones (picture)
Draw tens (bundles) and ones (individual dots) for 24. Draw tens and ones for 13. Circle the tens together (3 tens), circle the ones together (7 ones). Write: "24 + 13 = 3 tens + 7 ones = 37"
Strategy 2: Number line (visual)
Draw a line. Mark 24. Jump forward 10, then 3. Land on 37. Label each jump. Write: "Start at 24, jump 10, land on 34, jump 3, land on 37."
Strategy 3: Column addition (symbolic)
Show the algorithm (ones below ones, tens below tens). Regroup if needed. Write: "24 + 13 = 37"
Bottom of chart: "Which strategy do YOU like?" (students choose next lesson)
Now the chart is a reference. Monday's addition warm-up: "Pick one strategy from this chart. Show me how to solve 35 + 12." They use the chart. You reference it. It becomes part of how your class does maths.