Lesson 180 SWBAT plot coordinates One way that

Lesson 180 SWBAT plot coordinates.

One way that we can easily draw shapes is by using grid paper. The numbers on the grid tell us where to put dots and then we just connect them. This is called plotting points on the coordinate plane.

There are two numbers that help us plot a point. The most important thing to remember is that the first number always refers to the horizontal axis. The second number always refers to the vertical axis.

You try!

Let’s do these together!

Lesson 181 SWBAT multiply any double digit number by a single digit.

How can we use simpler facts How can we show that this to find the product of 14 x 9? works? You do.

How can we use simpler facts How can we show that this to find the product of 24 x 9? works? We do.

How can we use simpler facts How can we show that this to find the product of 76 x 8? works? We do.

How can we use simpler facts How can we show that this to find the product of 59 x 7? works? You do.

How can we use simpler facts How can we show that this to multiply 359 x 7? works? We do.

Lesson 182 SWBAT combine coins to make given values of money.

What is the name and value of each coin?

How many cents does it take to make a dollar? So, when we add up coins, we will put a decimal point when we get more than 100 cents.

Sammy has $1. 45 in his pocket. He has only coins. Which coins could Sammy have in his pocket?

If we have bills then we know we need to write them with a decimal point and zeros. Jason has 2 ten dollar bills and 5 one dollar bills. He spent $4. 76 on a set of cards. How much money does Jason have now?

Sarah had a twenty dollar bill. After she bought her groceries, she got back 3 quarters, 2 dimes and 1 penny in change. How much was Sarah’s grocery bill?

Lesson 183 SWBAT add decimals.

Yesterday when we added coins we used the decimal to separate dollars and change. 0. 08 5. 67 18. 78 9. 5

When we add these numbers, we want to add dollars with dollars and change with change. 0. 08 + 25. 67 = ? 18. 25 + 9. 6 = ?

These are special cases! 2 + 3. 95 = ? 4. 57 + 3. 589 = ?

Let’s practice! 6. 78 + 12. 9 = ?

Let’s practice! 0. 6 + 8 = ?

Let’s practice! 5. 678 + 19. 24= ?

Let’s practice! 5 + 24. 53 = ?

Lesson 184 SWBAT subtract decimals.

Yesterday we learned an important rule for adding decimals. What is it? Why does it make sense? 18. 87 + 4. 5 = ?

Of course we follow the same rule when subtracting decimals! 18. 87 – 4. 5 = ?

This subtraction problem is tricky! 6. 4 – 2. 75 = ?

Don’t forget our special cases! 2 – 1. 93 = ? 4. 57 – 3. 589 = ?

Let’s practice! 16. 78 - 2. 9 = ?

Let’s practice! 6 – 2. 44 = ?

Let’s practice! 5. 67 – 0. 983 = ?

Let’s practice! 15 – 2. 2 = ?

Lesson 185 SWBAT name 3 D figures. SWBAT find lines of symmetry.

Today we are going to review some important geometry vocabulary! We have been working on flat shapes all year. But there also shapes that take up space. Does anyone know what those kind of shapes are called?

What is the name of each figure? How are the figures the same? How do you tell them apart?

The face of a 3 D figure is a surface. It can be flat or curved. It is something you can slap! How many faces does each figure have?

The edge of a figure is where two faces meet. You can run your finger along an edge How many edges does each figure have?

The vertex of a figure is where two or more edges meet. You can poke your finger on a vertex. How many vertices does each figure have?

Now it’s time for speed drills on your whiteboard. Write the name of each figure. Then write the number of faces, edges and vertices!

Name: Number of Faces: Number of Edges: Number of Vertices:

Today we’re also going to learn about symmetry! Symmetry is when a shape can be divided into two matching halves that are mirror images of one another. Most faces have 1 line of symmetry!

One way to check for a mirror image is to fold the shape. You have 4 shapes to cut out and fold. See how many ways you can fold each shape two haves that are mirror images. Those are the lines of symmetry!

Quick whiteboard practice! How many lines of symmetry does the shape below have?