Geometry+Investigation+1

Lesson 1.1
Learning Targets: I can explain what a polygon is. I can count the faces on a 3D shape. I can explain what 2D and 3D shapes are.

1. Quick images with shapes (as described in lesson 1.1, p. 25 Define polygon (a shape with 3 or more straight sides) 2. Begin Activity 2 from p. 27 – draw a rectangle on the board, show a rectangular prism, define 2D and 3D. 3. Give each student one geoblock. Define a face – if you sit the geoblock down on the ground, it is sitting on one face. Each side of the geoblock is called a face. What does it feel like if you touch one face of your geoblock? 4. Show students how to count the faces on their geoblock. Have them try it. (Have stickers available so they can mark the ones they have counted if necessary.) 5. Demonstrate how to fill out the worksheet: how many faces does your geoblock have, and then draw each face. Students can trace each face if they want to, or draw it freehand. 6. Students go work on the worksheet with their block.

[|geoblockfaces.doc]

Lesson 1.2
1. Introduce sketching 3D blocks. Students practice sketching their block as well as counting faces and IDing their shape. 2. Teach how to make pedometers. (from MathPower) – some kids make them into the thousands, others into the hundreds 3. Centers: geoblock faces or pedometers 4. End with using ten frames to regroup.

Lesson 1.3
1. Basic facts cards: doubles – go over and tell them that one center will be adding these to their envelopes. Review how to practice your basic facts (p. 46) 2. Choices: geoblock faces / 3D sketches, pedometers, basic facts flashcards 3. End with clock practice

Lesson 1.4
1. Teach Ways to Fill (p. 47) 2. Choices: geoblock faces, basic facts flashcards, Ways to Fill 3. Begin a list of attributes of 3D shapes: ways to describe them (teach the word “attribute”) Talk about kinds of angles (pointy, wide, right)