The owed mixed set ran in full (6/6 values right unaided, 0 blanks) and a 3-question angle exit ticket followed (3/3 values); the two-step reason chain is one name short of secure. Consolidation block: Q1 probabilities sum to 1 (0.25, every line written); Q2 two-step angle 128 with co-interior reason and subtraction line unprompted, vertically-opposite reason not written; Q3 co-interior 55 with the stated subtraction line and reason; Q4 unlabelled estimated mean 19 — full working on paper by hand, typed answer bare, units only after '19 what?'; Q5 ratio to fraction 7/9; Q6 show that 0.5454… = 6/11 with the 100x and 99x lines uncued. Exit ticket (no hints): alternate 54, two-step 123 (both steps written, first named 'horizontally opposite'), corresponding 124. The mixed set took about 43 minutes against 20 planned, so the second mixed round was not run and the exit ticket ran 3 of 4.
Open with one two-step angle question with a diagram: work out the angle and write both reasons in words (G3) — 2/2 correctly named reasons unprompted makes it secure. Then the owed second mixed round: L-shape area (G14-G16), an inequality (A22), a linear equation (A17), a 'can you trust this estimate?' sample-size probability question (P4-P5). Unlabelled estimated mean again later in the week: watch units on the final line.
Second mixed round not run: L-shape area, an inequality, a linear equation, a sample-size probability question. Angle exit ticket ran 3 of 4 — the fourth (a second two-step item, both reasons in words) was not set.
| Topic | Name | Change | Evidence recorded |
|---|---|---|---|
| G3 | Developing → Developing | Applied, no hints on values: 5 angle items, 5 attempted, 0 blank, 5/5 values unaided (128, 55, 54, 123, 124). One-step reasons 3/3 as sentences unprompted (co-interior, alternate, corresponding). Two-step: mixed-set item 1/2 reasons (vertically opposite not written; name 'I don't know'); exit item both steps written unprompted but first named 'horizontally opposite'. Subtraction line written 3/3. | |
| P4-P5 | Secure → Secure | Mixed set Q1 unaided, non-calc: P(red) 0.35, P(blue) 0.4 → '1 - 0.35 = 0.65, 0.65 - 0.4 = 0.25, p = 0.25'; every working line before the answer. | |
| S4 | Secure → Secure | Mixed set Q4 unlabelled estimated mean, unaided: 19 correct. Paper (photo 09:58): 5×4, 15×7, 25×6, 35×3 by hand, sum 380, 380÷20 — all working unprompted. Typed answer bare '19'; no units, no range line, no labelled final line; '19 minutes' after '19 what?'. | |
| R7-R8 | Secure → Secure | Mixed set Q5 unaided, non-calc: red:blue 2:7, fraction blue → '7/9' correct first time (answer only). | |
| N10 | Developing → Developing | Mixed set Q6 unaided, no cue: 'x = 0.5454r, x * 100 = 100x, 100x = 54.5454r, 100x - x = 99x = 54, 54/99 = 6/11' — 100x and 99x lines both written; 'x = 54/99' not written as its own line. |