# Lesson 1 Explore the Coordinate Grid

• Let’s explore the coordinate grid.

## Warm-up Notice and Wonder: The Grid

What do you notice? What do you wonder?

## Activity 1 Can You Draw It: Shapes on the Coordinate Grid

1. Play three rounds of Draw My Shape using the three sets of cards from your teacher.

For each round:

• Partner A choose a card—without showing your partner—and describe the shape on the card.

• Partner B draw the shape as described.

• Partner A reveal the card and partner B reveal the drawing.

• Compare the shapes and discuss: What’s the same? What’s different?

Round 1

Round 2

Round 3

2. Look at partner B’s drawings for each round. When does partner B’s drawing look most like the shape on the card? Explain why you think that is so.

## Problem 1

Play a round of Guess Which One.

• Sit next to your partner.

• Partner A: Mentally choose a shape card without indicating which shape card you chose.

• Partner B: Ask yes or no questions to determine which shape card partner A has chosen.

• Switch roles and play another round of Guess Which One.

## Problem 2

Diego and Kiran were playing a round of Guess Which One. These are the last two shapes. What question can Kiran ask to determine which shape is the one that Diego picked?

## Problem 1

1. How would you describe the point labeled ?

2. How would you describe the rectangle R?