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MULTIPLICATION OF INTEGERS
MULTIPLICATION OF INTEGERS
Learning goals:
Learning goals:
Learners are able to:
- multiply integers with the same sign
- multiply integers with different signs
- use calculator to do the multiplication of integers
Content:
Content:
Students:
- multiply integers using mental and written strategies
Working Mathematically:
Working Mathematically:
Students:
- investigate, by developing patterns or using a calculator, the rules associated with multiplying integers (Reasoning)
Classroom activities:
Classroom activities:
1. Intention (2 mins):
1. Intention (2 mins):
Teacher introduces learning intention.
- Today I will figure out the rule for multiplication of integers with and without the same sign
- So that I can do the multiply positive integers, negative integers, one positive and one negative integer
- I know I got it when:
- watch a video of integer multiplication
- play multiplication game
- do the multiplication maze
2. Video and Give One, Get One activity (ICT) (20 mins)
2. Video and Give One, Get One activity (ICT) (20 mins)
students will:
- divide a paper in their notebook into 2 columns and then labelling as Give One and Get One.
- watch the video and note down 4-5 key information into the Give One column
- share with at least 4 other students what they noted down in the Give One column and note down the others information in the Get One column.
- share to the whole class the rule of multiplication for each case.
- note down the rule of multiplication
Teacher.
- turn on the video
- play music to inform students that they need to change the partner
- write the rule of multiplication on the board and do some examples to prove the rules are right.
3. Multiplication game (WM) (20 mins)
3. Multiplication game (WM) (20 mins)
- students will work in groups of 3.
- How to Play:
- Each player rolls the plus/minus die and the regular die. This is the first number in their equation (e.g., if a player rolls a + and 3, their first number is positive 3). The same player rolls the two die again. This is the their second number (e.g. -2). Now the player multiplies the two numbers (e.g. 3 x -2). The answer is -6, so the player will have to move their game piece back six spaces, or back to the start if their fewer than six spaces in. If they are at the start, they simple stay put.
- Players take turns, moving forward when the answer is positive, and backwards when it's negative. If the answer is a two digit number, players use the digit in the ONES place to determine how many spaces they move.
- Use paper and pencil to record the numbers and equations as you play. The winner is the first player to make it to the finish.
Teacher:
- introduce how to play the game.
- move around, make sure everyone is on task
- help if necessary.
3. Multiplying Integers Maze: (10 mins)
3. Multiplying Integers Maze: (10 mins)
students will :
- work in pairs on the multiplying integer maze
- start at the same labelled point and play paper-scissor-rock to find the person get the chance to start first
- use calculator or without calculator to find the answers
- the person goes to the End first will be the winner
Teacher:
- hang out the maze worksheets
- check students answer
Homework:
Lesson evaluation questions:
Lesson evaluation questions:
- Were all students on task?
- Could each student know how to work with the kit and figure out the rule of multiplication
- Did all students participate in the activity?
- Are there alternate (and possibly more effective) ways to collect student responses (e.g. using ICT, multiple choice, etc.)?
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