Expressions and Age Relationships

The video tutorial covers grade 6 module 4 lesson 19, focusing on substituting to evaluate addition and subtraction expressions. It begins with an introduction and student outcomes, followed by exercises involving age patterns, using variables to express age relationships, calculating box tops collected, tracking paper recycling, and creating an age table for Shelly and Kristen. The lesson concludes with a summary and exit ticket instructions.

What is the main focus of the lesson introduced in the video?

• Multiplying and dividing fractions

• Evaluating addition and subtraction expressions

• Solving quadratic equations

• Understanding geometric shapes

If you are 10 years old, how old is your sister if she is always 2 years older?

• 8 years old

• 10 years old

• 12 years old

• 14 years old

What expression represents your sister's age if your age is represented by 'y'?

• y / 2

• 2y

• y + 2

• y - 2

How many box tops will Noah have after 5 days if he starts with 10?

• 5

• 10

• 15

• 20

What expression represents the number of box tops Carter has after 'D' days?

• D + 10

• D * 15

• D + 15

• D - 15

How much paper does the primary school recycle each week?

• 400 lb

• 300 lb

• 200 lb

• 100 lb

If the intermediate school starts with an extra 300 lb, how much paper will they have recycled by week 3?

• 1,200 lb

• 1,500 lb

• 600 lb

• 900 lb

If Kristen is 16 years old, how old is Shelly?

• 26 years old

• 11 years old

• 16 years old

• 21 years old

What expression represents Shelly's age if Kristen's age is 'K'?

• K / 5

• 5K

• K + 5

• K - 5

If Shelly is 'S' years old, how old is Kristen?

• S + 5

• S / 5

• S - 5

• 5S