2nd Six Weeks
2nd Grade Math Resources for families
Unit 3: Add/Subtract without Algorithms
Unit 3: Add/Subtract without Algorithms
Add/subtract two‐digit numbers with models (ex: base-ten blocks), pictures (ex: number lines), and place value
Solve one‐ and multi‐step +/- word problems within 1,000
Determine the value of a collection of coins up to one dollar
Unit 4: 2D and 3D Figures
Unit 4: 2D and 3D Figures
Classify/sort polygons with 12 or fewer sides according to the number of sides and number of vertices
Classify/sort 3D solids, including spheres, cones, cylinders, rectangular prisms (including cubes) and triangular prisms
Unit 3: Add/Subtract without Algorithms
Unit 3: Add/Subtract without Algorithms
Add/subtract two‐digit numbers with models (ex: base-ten blocks), pictures (ex: number lines), and place value
Add/subtract two‐digit numbers with models (ex: base-ten blocks), pictures (ex: number lines), and place value
- Pearson Home-School Connection Activities
- Encourage your child to explain one strategy he can use to solve a problem. For example, “I know that 61 + 20 = 81 because 20 is two tens. I started with 61 and I counted on two tens: 61, 71, 81.”
- When your child sees a number that is close to the next ten (one that ends in 7, 8, or 9), suggest she use a simplifying strategy rather than the vertical form. For example, to solve 58 + 63, ask your child, “How can you make the next ten to solve a simpler problem?” (60 + 61).
How-To: Number lines
Rectas numéricas
How-To: Regroup to Add with Models
Reagrupar para sumar
How-To: Regroup to Subtract with Models
Reagrupar para restar
Solve one‐ and multi‐step +/- word problems within 1,000
Solve one‐ and multi‐step +/- word problems within 1,000
- Encourage your child to visualize story problems. Ask, “What can you draw to represent this story? What can you tell by looking at your drawing?” If needed, invite your child to act out the story by using simple objects such as action figures or pennies.
- Present everyday situations to help your child understand the idea of whether there is enough. For example, “Imagine you have 4 eggs in a carton. You need 6 eggs for your pancake mix. Do you have enough eggs to make pancakes?” (No.) “What might you do?” (Open a new carton of eggs!) When shopping in the grocery store, you might say, “We are buying 12 apples. I see that 4 are green and the rest are red. How many red apples are we buying?”
- When a word problem asks your child to compare amounts, ask questions such as “Who has more?” to help your child's problem solving process by identifying which bar in the strip diagram should be longer. Questions will also help him recognize that he is finding the difference.
Determine the value of a collection of coins up to one dollar
Determine the value of a collection of coins up to one dollar
- Help your child develop coin recognition by showing her a variety of coins and asking her to name each coin and state its value.
- Give your child groups of coins and ask him to count on to find the total value, starting with the coins of greatest value and ending with the coins of least value.
- Help your child practice making one dollar or making change from one dollar by asking her questions such as, “If I have 35¢, how much more do I need to have 100¢, or one dollar?” Give your child coins to show how she counts on to one dollar.
Unit 4: 2D and 3D Figures
Unit 4: 2D and 3D Figures
Classify/sort polygons with 12 or fewer sides according to the number of sides and number of vertices
Classify/sort polygons with 12 or fewer sides according to the number of sides and number of vertices
Classify/sort 3D solids, including spheres, cones, cylinders, rectangular prisms (including cubes) and triangular prisms
Classify/sort 3D solids, including spheres, cones, cylinders, rectangular prisms (including cubes) and triangular prisms
- Pearson Home-School Connections Activity
- When drawing simple shapes, have your child practice dividing them into halves, thirds, and fourths (emphasizing equal-sized pieces).
- Go on a shape hunt around the home and around town (see printable cards). Challenge your child to spot as many shapes as she can and to prove she is correct by naming the attributes that define the shape. For example, she might spot a street sign and say, “I see a rectangle! It has 4 sides and 4 vertices!”
Polygons
3D Solids