OAT Lesson 2: Compare Reptile Lengths in Story Problems

Posljednje ažuriranje about 3 years ago

Today, you solved story problems by comparing lengths. You used diagrams to help you think about which reptile was longer or shorter and to help you think about finding the difference.

Obavezno

OAT Lesson 2: Compare Reptile Lengths in Story Problems

Posljednje ažuriranje about 3 years ago

Develop Understanding

Today's Learning Goal: (G2, U3, L6)

Solve addition and subtraction story problems about length.

Today's Materials:

Laptop
Laptop charger
Pen/Pencil/Paper/Expo Marker (optional)

Please complete the Jump Start (activator). You have 5 minutes before we review. This is independent it should be silent.

Reminders:

1. Ready for class

2. No cellphones

3. Volume must be low.

4. Read and follow all directions

5.) Take your bag off and immediately begin the Activator.

Jump Start: Number Talk Fives and Tens - (5 min)

Obavezno

For each problem find the value of each expression mentally.

Obavezno

Launch: Adding and Subtracting Word Problems - (10 min)

null

I do (Question 2)

We Do (Question 3)

You Do (Question 4)

Obavezno

Andre’s snake is 85 centimeters long. His lizard is 28 centimeters long. How many centimeters longer is Andre’s snake than his lizard? (Show your thinking.)

Obavezno

Adrianna's tortoise is 55 millimeters long. Her snake is 45 millimeters long. How many millimeters longer is Adrianna's tortoise than her snake? (Show your thinking.)

Obavezno

David's iguana is 23 inches long. His lizard is 8 inches long. How many inches longer is David's iguana than his lizard.

Activity 1: Who's Pet is Longer? - (15 min)

null

Lin’s pet lizard is 62 cm long. It is 19 cm shorter than Jada’s. How long is Jada’s pet lizard?

Obavezno

Diego and Mai have pet snakes. Mai’s snake is 17 cm longer than Diego’s. Mai’s snake is 71 cm. How long is Diego’s pet snake?

Obavezno

Activity 2: Guess My Reptile - (15 min) (Groups of 2)

null

Partner A Reptile:

null

Choose one reptile from your list and one reptile from your partner’s list.

Partner B:

null

Obavezno

Fill in the blanks to create a story problem using the lengths of the reptiles you picked. Then share your sentences with your partner.

My reptile is cm long.

It is cm (shorter/longer) than one of your reptiles.

Obavezno

Which reptiles did your partner pick? (Show your thinking.)

Lesson Synthesis: Representations - (5 min)

null

Today, you solved story problems by comparing lengths. You used diagrams to help you think about which reptile was longer or shorter and to help you think about finding the difference.

Obavezno

How did the diagram help you think about which animal was longer?

How did the diagram help you decide if you would add or subtract?

Cool Down: Kiran and Han Compare Pets - (5 min)

null

Obavezno

Kiran’s pet snake is 47 cm long. It is 26 cm shorter than Han’s pet snake. How long is Han’s pet snake?

2.OA.A.1

Obavezno

Select the diagram that matches the story.

A.)

null

B.)

null

Obavezno

Closure Questions:

How do you feel about today's material?
What are some ways we can represent word problems?
Whats the difference between an expression and an equation?

OAT Lesson 2: Compare Reptile Lengths in Story Problems

Today, you solved story problems by comparing lengths. You used diagrams to help you think about which reptile was longer or shorter and to help you think about finding the difference.

OAT Lesson 2: Compare Reptile Lengths in Story Problems

Jump Start: Number Talk Fives and Tens - (5 min)

For each problem find the value of each expression mentally.

Launch: Adding and Subtracting Word Problems - (10 min)

I do (Question 2)

We Do (Question 3)

You Do (Question 4)

Andre’s snake is 85 centimeters long. His lizard is 28 centimeters long. How many centimeters longer is Andre’s snake than his lizard? (Show your thinking.)

Adrianna's tortoise is 55 millimeters long. Her snake is 45 millimeters long. How many millimeters longer is Adrianna's tortoise than her snake? (Show your thinking.)

David's iguana is 23 inches long. His lizard is 8 inches long. How many inches longer is David's iguana than his lizard.

Activity 1: Who's Pet is Longer? - (15 min)

Lin’s pet lizard is 62 cm long. It is 19 cm shorter than Jada’s. How long is Jada’s pet lizard?

Diego and Mai have pet snakes. Mai’s snake is 17 cm longer than Diego’s. Mai’s snake is 71 cm. How long is Diego’s pet snake?

Activity 2: Guess My Reptile - (15 min) (Groups of 2)

Partner A Reptile:

Choose one reptile from your list and one reptile from your partner’s list.

Which reptiles did your partner pick? (Show your thinking.)

Lesson Synthesis: Representations - (5 min)

Today, you solved story problems by comparing lengths. You used diagrams to help you think about which reptile was longer or shorter and to help you think about finding the difference.

How did the diagram help you think about which animal was longer?

How did the diagram help you decide if you would add or subtract?

Cool Down: Kiran and Han Compare Pets - (5 min)

Kiran’s pet snake is 47 cm long. It is 26 cm shorter than Han’s pet snake. How long is Han’s pet snake?

Select the diagram that matches the story.

Closure Questions:

Jump Start: Number Talk Fives and Tens - (5 min)

For each problem find the value of each expression mentally.

Launch: Adding and Subtracting Word Problems - (10 min)

I do (Question 2)

We Do (Question 3)

You Do (Question 4)

Andre’s snake is 85 centimeters long. His lizard is 28 centimeters long. How many centimeters longer is Andre’s snake than his lizard? (Show your thinking.)

Adrianna's tortoise is 55 millimeters long. Her snake is 45 millimeters long. How many millimeters longer is Adrianna's tortoise than her snake? (Show your thinking.)

David's iguana is 23 inches long. His lizard is 8 inches long. How many inches longer is David's iguana than his lizard.

Activity 1: Who's Pet is Longer? - (15 min)

Lin’s pet lizard is 62 cm long. It is 19 cm shorter than Jada’s. How long is Jada’s pet lizard?

Select the diagram that matches the story.

Diego and Mai have pet snakes. Mai’s snake is 17 cm longer than Diego’s. Mai’s snake is 71 cm. How long is Diego’s pet snake?

Select the diagram that matches the story.

Activity 2: Guess My Reptile - (15 min) (Groups of 2)

Partner A Reptile:

Choose one reptile from your list and one reptile from your partner’s list.

Which reptiles did your partner pick? (Show your thinking.)

Lesson Synthesis: Representations - (5 min)

How did the diagram help you think about which animal was longer?

How did the diagram help you decide if you would add or subtract?

Cool Down: Kiran and Han Compare Pets - (5 min)

Kiran’s pet snake is 47 cm long. It is 26 cm shorter than Han’s pet snake. How long is Han’s pet snake?

Select the diagram that matches the story.

Solve. Show your thinking.Han snake is ______ cm long.

Closure Questions:

Select the diagram that matches the story.

Select the diagram that matches the story.

Solve. Show your thinking.Han snake is ______ cm long.

Solve. Show your thinking.
Han snake is ______ cm long.

Solve. Show your thinking.
Han snake is ______ cm long.