Mississippi / second grade / Math
Content Strands:
Number and Operations, Data Analysis and Probability, and Measurement, Algebra
Number and Operations
1. Understand and represent relationships among numbers and operations 9 addition, subtraction, multiplication ). Compute fluency using effective strategies or rote memory.
a. Recall addition and subtraction facts. ( DOK 1 )
d. Round up to three digit whole numbers to the nearest hundreds. ( DOK 1 )Determine and compare the value of money up to $5.00 using the appropriate symbols for dollars and cents. ( DOK 1 )
f. Determine and compare the value of money up to $5.00 using the appropriate symbols for dollars and cents. ( DOK 1 )
2. Analyze patterns, numbers, relationships, and functions.
b. Use number patterns to skip count by 2's, 3's, 5's, and 10's. ( DOK )
LA / second grade / Math
GLE - Grade Level Expectation
Number and Number Relations
3. Make reasonable estimates of the number of objects in a collection with fewer than 100 objects ( N-2-E )
4. Count and write the value of amounts of money up to $1.00 using cents and dollars ( N-2-E ) (N-6-E) (M-1-E) (M-5-E)
9. Add and subtract 1- and 2- digit numbers ( N-6-E) (N-7-E)
10. Round numbers to the nearest 10 or 100 and identify situations in which rounding is appropriate (N-7-E) ( N-9-E) Day 1 Monday: Write some simple two and three digit whole numbers on the Promethean board. Explain to the children that they will be rounding these numbers to the nearest tens and hundreds. Include two word problems as examples on rounding numbers. Example – 66, is this number closer to 60 or 70- answer 70. This can also use a number line for an added example. 84, is this number closer to 80 or 90, then the answer is 80. 134, is this number closer to 100 or 200 answer 100. 251, is this number closer to 200 or 300 answer 300. Word problem examples - Jose has 26 Hot Wheel cars, his friend Joshua has 32, and his brother Juan has 45; estimate how many cars they have all together. 26 rounded is 30, 32 rounded is 30, 45 rounded is 50 = 110. Next word problem - Miss Jarrells class collects insects for a hobby. They have collected 234 insects since the beginning of the school year. Miss Gumms class has collected 149 insects since the beginning of the school year. What is the difference of collected insects from Miss Jarrells class and Miss Gumms class, rounded to the nearest hundreds. 234 = 200, 149 = 100 the difference is 100 Also subtract the original whole number to compare your rounded # answer. 234- 149= 85, 85 rounded is 100. Explain to the children that this is a form of estimating. Give children math work sheet and give them 30 minutes to work on it. What's not finished in class is homework. Day 2 Tuesday: Determine and compare the value of money from less than a $1.00 and continue up to $5.00 using a game on the Promethean board. Also show the children how you can round money to the nearest dollar. Do an overview of what each coin is worth and if we have 4 quarters = $1.00, 10 dimes = $1.00, 20 nickels = $1.00, 100 pennies = $1.00. Divide the class into two teams. Open up a flipchart and insert the Money US math starter under the resource browser into the flipchart. Open the clock tool and use the count down to set the amount of time to 5 minutes. Each team will have 5 minutes to get to 5 dollars by using rounded amounts. You will put an amount on the flipchart and then firs tteam will select the amount shown through coins on the flipchart. Continue to add a new math starter each time the correct rounded amount is given. Then repeat it with team number 2. The team closest to $5.00 wins. Then divide the losing team into halves and repeat the game until everyone has won.
Day 3 Wednesday: Use number patterns to skip count or patterns of grouping. First example- use pennies and have the children to count the pennies by two's. ( 2, 4, 6, 8, 10, 12, 14....) ( give the children 24 plastic coins to work with ). Next give 30 plastic pennies to each child and have them put them in groups of 5. Ask the Children to count the sets by fives. Next take the plastic dimes and put them in sets of tens and count the groups as dollars. Pick different objects in the classroom and place sets of two's/ five's / ten's/. Try counting the sets in reverse - 50, 40, 30, 20, 10 or 12, 10, 8, 6, 4, 2. Give each child a math work sheet to do in class/ unfinished work is homework. Day 4 Thursday: Estimating the number of objects(with fewer than a hundred objects) Place different size containers with different objects in each container. Have each child estimate how much is in each container. When everyone is finished estimating inform the class what the actual amount is in each container. Ask the children who came the closest in their estimating. Examples for containers - pennies, dimes, nickels, paper clips, erasers, crayons, thumb tacks. Give each child a timed math sheet of addition and subtraction / one and two digit numbers/ 10 minutes time. Review Monday, Tuesday, Wednesday, and Thursdays lessons and prepare children for a test on Friday. Day 5 Friday: Do a quick review on testing material and prepare for test. When each child is finished with their test, review money lesson with fake money. Set up on one side of the room a play bank and on the other side a play store. Show the children how a bank works and a store. Have the children make signs for the bank and store. Also place objects from the classroom for sale in the store. Use a timer so each child has a turn being a bank clerk or sales person.
Materials: 4 sets of work sheets and 1 test / Promethean board and Activ Software/ plastic jars, coins, paper clips, thumb tacks, crayons / play bank and play store supplies/ pencils / fake money.