2nd Grade

Math Remediation

Unit 1 – Number and Operation Sense, Part 1

Unit Remediation:

· Students practice rote counting on a daily basis. When counting forward, clap on every change in tens. Mastery of counting forward is a prerequisite to counting backward. With counting backward, count from 10 to 0. When students have mastered this, count from 20 to 0. Add a new decade until counting from 100 to 0 has been mastered.

· Students use both a 0-99 chart and a 1-100 chart, pointing to the numbers as they count forward and backward.

· Students fill in a blank 10-by-10 grid (both 0-99 and 1-100.) The grid may be tailored such that tens are added upon mastery.

· Call out a number from 0-99 or 1-100. Have students locate the number on the corresponding chart. Have students write the number on a dry erase board.

· Use vocabulary terms “more,” “less,” “greater than, “equal to,” “almost”, etc., to compare numbers on the grid.

· Read a story that contains numbers, for example “Ten Little Monkeys,” or make up a story. Have students listen for numbers as they are read and write down the word on an individual board. Have students model numbers with cubes or other items.

· “Math Bingo” in K12 lessons

· Incorporate written number words on a word wall.

Lesson 1: Number Words to Twenty

· Write number words to twenty.

Remediation:

· Call out a number from 0-20. Have students locate the number on a corresponding chart. Have students write the number as a word on a dry erase board.

· If student is having trouble matching groups with a number, have him or her count groups aloud.

Lesson 2: Compare: Before, After, Between

· Write the number that comes just before a given number.

· Write the number that comes just after a given number.

· Write the number that comes between two given numbers.

· Order numbers to 20.

Remediation:

· Use “Number line” flipchart.

· Use “To Twenty” flipchart to order numbers

· Have index cards or flashcards with

· Create student task bags. Create flash cards or index cards that have numbers from 0-20. On another set of index cards have the number word. Place cards in colored socks or bags. Have students grab a “task bag.” Have students match the cards and place in order

Lesson 3: Is Greater Than, Is Less Than

· Compare numbers using the symbols < or >.

Remediation:

· If your student is confused by < and >, remind him that the pointed end always faces the smaller number. If students continue to struggle, use a visual aid of an alligator. The jaws open and eat the larger number.

5 3

· Students may also need extra help with the concept of the number line. Have number lines from lesson copied and laminated. Students can use dry erase markers to plot different numbers on the line or use line as a reference when comparing greater than and less than.

· Have groups of students roll number cubes to generate three-digit numbers. Write the numbers on dry erase boards with a middle space to fill in the appropriate symbol of equality or inequality. Have groups justify their choices.

Lesson 4: Addition Strategies

· Find sums to 8 using related facts.

· Use the count on strategy to find sums to 8 on a number line.

Remediation:

· Use unifix cubes in different colors to model addition

· Have number lines from lesson copied and laminated. Students can use dry erase markers to plot different numbers on the line and use the count on strategy.

· Provide a teacher-made folder game that looks like the following:

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The rectangles will hold the number cards drawn. The circle will hold the appropriate operation sign (+ or -) or an arrow sign to indicate count on or count back. Have students draw counting on and counting back on the number line to determine the answer.

Lesson 5: Sums to 10

· Add numbers with sums to 10.

Remediation:

· Use “The Magic Plus Machine.”

· Use unifix cubes in different colors to model addition

· Have number lines from lesson copied and laminated. Students can use dry erase markers to plot different numbers on the line and use the count on strategy.

· Have students make flash cards with addition facts for 10.

· Have students “write” addition facts for 10 on carpet squares, any textured surface.

· Cover student’s desk in shaving cream and have students “write” addition facts for 10 on desk.

Lesson 6: Using Doubles to Add

· Find sums using the doubles, doubles plus 1, and doubles minus 1 strategy.

· Find missing addends using the doubles, doubles plus 1, and doubles minus 1 strategy.

Remediation:

· Have students work problems on individual dry erase boards, circling tens and doubles as they add. Provide extra practice until mastery is met.

· Use unifix cubes in different colors to model “1 more” and “1 less”

Lesson 7: Sums to 12

· Add numbers with sums of 12 or less.

Remediation:

· Have students make flash cards with addition facts for 12.

· Have students “write” addition facts for 12 on carpet squares, any textured surface.

· Cover student’s desk in shaving cream and have students “write” addition facts for 10 on desk.

Lesson 8: Three Addends & Relate Addition and Subtraction

· Solve addition problems with multiple addends.

· Solve problems with related addition and subtraction facts.

Remediation:

· Use “The Magic Plus Machine.”

· “The Minus Machine”