Use number lines when calculating with both positive and negative numbers. Having a vertical and/or horizontal number line available when doing homework can be very helpful.
Mentally estimate and calculate tips, sales tax, and sale percentages when shopping and eating out.
Interpret positive and negative numbers in real life such as with temperature, debt/owing money, negative and positive charges, win/losses, etc.
Recognize rational and irrational numbers.
2. Expressions & Equations. Student’s expectations jump greatly in 7th and 8th grade when learning about expressions and equations. They begin to use variables and solve multi-step real-world problems. Students interpret inequalities and graph them accordingly. They are preparing for algebra by looking at and understanding linear equations and finding slope of a table, graph, and equation.
Encourage your child to:
Distinguish between an equality and inequality (>,<, >, <) using variables:
equality: 4s + 20 = 46
inequality: 4s + 20 < 46
Look at and solve multi-step real-world problems using variables. For example, As a salesperson, you are paid $50 per week plus $3 per sale. This week you want your pay to be at least $100. Write an inequality for the number of sales you need to make, and describe the solutions.
Explore and examine different types of graphs and tables either online or in the newspaper.
Understand the meaning of slope and how to find it using a graph, table, or equation:
3. Geometry. Students focus greatly on geometry vocabulary and using their vocabulary accurately in their writing. They extend their understanding of volume and area to calculate surface area of 2-D and 3-D objects. They also learn the formulas for the area and circumference of a circle. In 8th grade, they learn the Pythagorean Theorem and apply it to real-world and mathematical problems. Students also must know the formulas for finding the volume of cones, spheres, and cylinders.
Answers & Comments
Answer:
Use number lines when calculating with both positive and negative numbers. Having a vertical and/or horizontal number line available when doing homework can be very helpful.
Mentally estimate and calculate tips, sales tax, and sale percentages when shopping and eating out.
Interpret positive and negative numbers in real life such as with temperature, debt/owing money, negative and positive charges, win/losses, etc.
Recognize rational and irrational numbers.
2. Expressions & Equations. Student’s expectations jump greatly in 7th and 8th grade when learning about expressions and equations. They begin to use variables and solve multi-step real-world problems. Students interpret inequalities and graph them accordingly. They are preparing for algebra by looking at and understanding linear equations and finding slope of a table, graph, and equation.
Encourage your child to:
Distinguish between an equality and inequality (>,<, >, <) using variables:
equality: 4s + 20 = 46
inequality: 4s + 20 < 46
Look at and solve multi-step real-world problems using variables. For example, As a salesperson, you are paid $50 per week plus $3 per sale. This week you want your pay to be at least $100. Write an inequality for the number of sales you need to make, and describe the solutions.
Explore and examine different types of graphs and tables either online or in the newspaper.
Understand the meaning of slope and how to find it using a graph, table, or equation:
3. Geometry. Students focus greatly on geometry vocabulary and using their vocabulary accurately in their writing. They extend their understanding of volume and area to calculate surface area of 2-D and 3-D objects. They also learn the formulas for the area and circumference of a circle. In 8th grade, they learn the Pythagorean Theorem and apply it to real-world and mathematical problems. Students also must know the formulas for finding the volume of cones, spheres, and cylinders.