Unit 5 · Standard 6.GR.1
Area of Regular Polygons
My Notes Level 1 Support Level 2 Standard Level 3 Enrichment
Today's objectives
Content Objective: I can find the area of a regular polygon by decomposing it into triangles.
Language Objective: I can explain my steps using the words regular polygon, decompose, triangle, and composite.
📖 See Learn It for the explanation and worked examples, and the Vocab tab for the words. These are your notes to fill in and keep.
✏️ Fill in each blank as we go. Use the Word Bank to help you.
👆 Tap any word to see its meaning and a picture.
Level 3: try the blanks from memory first, then check the bank.
- 1A polygon with all sides and all angles equal is a .
- 2To break a shape into smaller shapes is to it.
- 3A three-sided polygon is a .
- 4Made of two or more shapes combined, a figure is .
- 5A math rule written with symbols is a .
Write About the Math
How much will the gazebo flooring cost?¿Cuánto costará el piso del quiosco?
Say your answer to a partner first. Then write it, using at least two of these words:
Model: We decompose the hexagon into triangles because we already know how to find a triangle's area. — Students explain that splitting the hexagon into 6 equal triangles lets them use the triangle area formula they already know, then combine the parts.
Start
Complete the frames. Use the word bank.Completa las oraciones. Usa el banco de palabras.
- One triangle's area is ___ sq ft. The octagon has ___ triangles, so total area = ___ sq ft. The cost is ___ x $3 = $___.
- My answer is ___ because ___.Mi respuesta es ___ porque ___.
Build
Write two connected sentences. Use because, so, or but.Escribe dos oraciones conectadas. Usa porque, entonces o pero.
- My claim is ___.Mi afirmación es ___.
- My evidence is ___, so ___.Mi evidencia es ___, entonces ___.
Explain
Write a claim, give math evidence, and explain your reasoning.Escribe una afirmación, da evidencia matemática y explica tu razonamiento.