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<div class="tg-head"><span class="week">Teacher Guide</span><span class="day">Week 23</span><span class="topic">Lines, Angles & Symmetry — Teacher Guide</span></div>
<div class="tg-section-title">Monday: Points, Lines, Segments & Rays</div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">1</span><span class="tg-sec-t">Warm-up</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">point, line segment, ray, line</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">2</span><span class="tg-sec-t">Learn Table</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Student copies each figure — check endpoints/arrows drawn correctly</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">3</span><span class="tg-sec-t">Identify</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">ray, line segment, point, line, line segment</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">4</span><span class="tg-sec-t">Number Talk</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Maya is wrong — a line goes on forever so it is longer; we just can't draw all of it</span></div>
<div class="tg-problem">2. <span class="ans">Ray: starts at one point, shines on forever; segment stops at both ends</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">5</span><span class="tg-sec-t">Challenge</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Letter A: usually 3 segments; accept any correct construction, compare counts</span></div>
</div></div><p class="tg-note">Page break</p>
</page><page>
<div class="tg-section-title">Tuesday: Right Angles</div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">1</span><span class="tg-sec-t">Warm-up</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">T, F, T, F</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">2</span><span class="tg-sec-t">Learn</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Point out square-corner mark □</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">3</span><span class="tg-sec-t">Estimate First</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">yes (90°), no (60°), no (110°), yes (90°) — praise honest estimates</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">4</span><span class="tg-sec-t">Right Angles in Shapes</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Square: 4, Rectangle: 4, Triangle: 0 (this one), Circle: 0</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">5</span><span class="tg-sec-t">Two Ways</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Any two: paper corner, book corner, folded circle, index card</span></div>
</div></div><p class="tg-note">Page break</p>
</page><page>
<div class="tg-section-title">Wednesday: Lines of Symmetry</div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">1</span><span class="tg-sec-t">Warm-up</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Any 3 right angles: door, window, book, table corner...</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">2</span><span class="tg-sec-t">Learn</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Emphasize FOLD test — both halves match exactly</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">3</span><span class="tg-sec-t">Draw Lines</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Heart: 1, Square: 4, Triangle (equilateral): 3, Rectangle: 2, Arrow: 1</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">4</span><span class="tg-sec-t">Word Problems</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Rosa's heart: 1 line of symmetry</span></div>
<div class="tg-problem">2. <span class="ans">Sister is right — a circle has endless lines of symmetry (every line through the center)</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">5</span><span class="tg-sec-t">Create Own</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Fold test should show matching halves</span></div>
</div></div><p class="tg-note">Page break</p>
</page><page>
<div class="tg-section-title">Thursday: Geometry in the Real World</div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">1</span><span class="tg-sec-t">Warm-up</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">YES (heart), NO (letter F), YES (square)</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">2</span><span class="tg-sec-t">Word Problems</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Line segment — it has two endpoints (the corners)</span></div>
<div class="tg-problem">2. <span class="ans">Two rectangles (cut through middles) OR two triangles (cut corner to corner)</span></div>
<div class="tg-problem">3. <span class="ans">Yes — that is exactly what a line of symmetry means</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">3</span><span class="tg-sec-t">Equal Shares</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Halves: 1 cut through middle; Fourths: 2 cuts; Circle halves: 1 cut through center</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">4</span><span class="tg-sec-t">Number Talk</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Same! 2 fourths = 1 half</span></div>
<div class="tg-problem">2. <span class="ans">Square has 4; two right triangles have 1 each = 2, so the square</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">5</span><span class="tg-sec-t">Create Own</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Accept any problem using the week's vocabulary</span></div>
</div></div><p class="tg-note">Page break</p>
</page><page>
<div class="tg-section-title">Friday: Review & Self-Check</div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">1</span><span class="tg-sec-t">Warm-up</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">C, A, B, D</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">2</span><span class="tg-sec-t">Estimate First</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Square: 4, Heart: 1, Rectangle: 2, Triangle: 3</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">3</span><span class="tg-sec-t">Mixed Review</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">ray, right, 4, 1</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">4</span><span class="tg-sec-t">Word Problems</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">A square</span></div>
<div class="tg-problem">2. <span class="ans">One vertical + one horizontal cut (cross pattern) makes 4 equal fourths; accept the two-diagonals X pattern too</span></div>
</div></div><div class="tg-sec"><div class="tg-sec-head"><span class="tg-sec-n">5</span><span class="tg-sec-t">Self-Check</span></div><div class="tg-box"><div class="tg-problem">1. <span class="ans">Accept student self-assessment and reflection</span></div>
</div></div>
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