Goal: make, read, and order 101–105 as 100 plus ones. Prepare: hundred square or ten strips, five singles, H/T/O mat, Day 23 cards.
- Notice, 3: Compare 100 with one hundred square plus one loose mark. Ask whether the numeral can be 100 still. Key: 101.
- Model, 5: Build 103 as one hundred, no separate tens, three ones. Display 100 + 3 = 103, and show the middle zero's place role. Make 130 with a different model only to show that reversing positions changes the amount; 130 is outside today's target range.
- Guided, 8: Cards A/B show 101 and 104. Learners make both, point to the zero tens column, and explain that 104 exceeds 101 by three loose marks. Locate both on the 91–120 chart.
- Independent, 6: Card C shows 105. Learner models it with a hundred and five singles or ten strips and five singles, then gives a number between 102 and 105 and justifies it.
- Exit, 3: Ask what one hundred and two loose ones names, and what is one less. Key: 102 and 101. If 12 appears, explicitly keep the hundred square while removing one loose mark.