Amazing Addition!

Last week we focussed on addition strategies in our maths lessons.

We use addition in every day life all the time, so it is important to improve our skills in this area of maths. Here are some effective addition strategies that we used in class:

  • The addition tens and twenties facts
  • Doubles and near doubles addition facts
  • Double doubles (for example, 8+8=16 and 16+16=32)
  • The Jump Strategy to add hundreds, then tens, then ones by jumping on a number line
  • The Split Strategy to split the hundreds, tens and ones and add them separately
  • The Compensation Strategy when a number we are adding is close to a “round” number we can add or take to the nearest 10
  • 100 facts (addition equations that equal 100)
  • Bridging to the nearest 10 as these numbers are easy to add to.

Students enjoyed practising a variety of these addition strategies during our learning tasks and it was fantastic to hear their mathematical discussions and explanations.

Everyone was so focussed and keen to develop their addition skills!

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What addition strategies do you enjoy using?

When do you use addition in everyday life?

 

Mathematical Word Problems

This week in maths, we have been working on solving and creating mathematical word problems.

We have focussed on addition and subtraction for our word problems and will extend our knowledge to multiplication and division word problems soon. We solve mathematical problems in real life all the time, so it is important we keep developing our skills in this area of maths.

We discussed the important steps required to successfully solve a word problem. They are:

  • Read the word problem carefully
  • Highlight the key words
  • Eliminate unnecessary information
  • Identify what the problem is asking you to work out
  • Decide what process/processes you need to use to solve the problem (addition, subtraction, multiplication, division)
  • Solve the problem
  • Double check your answer.

We solved a variety of single-step and multi-step word problems as a class and individually, and it was essential that all mathematical processes were recorded in our maths books.

Then it was time to create our own addition and subtraction word problems! You can read a selection of them in the slideshow below.

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What did you think of our word problems?

When have you had to solve a mathematical word problem in real life?

Can you write an addition or subtraction word problem in your comment?

Addition Strategies

This week we focussed on addition strategies in our maths lessons.

http://pixabay.com/static/uploads/photo/2012/04/01/13/10/blackboard-23421_640.png

http://pixabay.com/static/uploads/photo/2012/04/01/13/10/blackboard-23421_640.png

We use addition in every day life all the time, so it is important to improve our skills in this area of maths. Here are some effective addition strategies that we used in class this week:

  • The addition tens and twenties facts
  • Doubles and near doubles addition facts
  • Double doubles (for example, 8+8=16 and 16+16=32)
  • The Jump Strategy to add hundreds, then tens, then ones by jumping on a number line
  • The Split Strategy  to split the hundreds, tens and ones and add them separately
  • The Compensation Strategy when a number we are adding is close to a “round” number we can add or take to the nearest 10
  • 100 facts (addition equations that equal 100)
  • Adding to the nearest 10 when solving two (or more) digit addition problems
  • Adding hundreds, tens and ones when solving three digit problems
  • Using a range of efficient addition strategies during problem solving tasks.

In our classroom we use a variety of hands on and interactive games, strategy-based tasks, real life problems and websites/apps to develop our mathematical skills.

P1090594

P1090595

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We used a range of resources and materials in our maths lessons this week, including:

  • Dice
  • Number boards
  • iPads
  • Games on the interactive whiteboard
  • Our “Boom” cards
  • Number fans
  • Calculators (to check our answers)

P1090592

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What addition strategies do you enjoy using?

When do you use addition in everyday life?

Do you have a favourite addition website or app?

Instructional Videos: Vertical Addition

Last week, our maths focus was solving vertical addition equations.

We improved our addition skills earlier in the year by focussing on a range of mental strategies. Sometimes, vertical addition is a useful method to use, particularly if you are working with larger numbers or decimals.

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Earlier in the week, students practised adding two, three and four digit numbers together using the vertical addition strategy. Once students were confident with this addition method, they could begin making a short instructional video to demonstrate their knowledge. This task involved:

1. Choosing an addition problem involving two, three or four digit numbers.

2. Deciding what resources and materials to use to model the problem.

3. Solving the problem aloud using the correct mathematical language.

4. Writing a script and rehearsing with a partner.

5. Filming the video using an iPad.

Here are some of our instructional videos.

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This was our first attempt to make instructional videos. We learnt a lot of skills from this experience, including:

  • The importance of using the correct mathematical language
  • Speaking clearly and loudly
  • Using equipment successfully
  • Holding the iPad steady while filming.

We plan to make more videos with our iPads to demonstrate other mathematical concepts later in the year.

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What did you think of our videos?

When would you use the vertical addition strategy?

What else could we make an instructional video about?

Addition

We are currently learning about addition in maths.

We use addition in every day life all the time, so it is important to improve our skills in this area of maths. Here are some effective addition strategies that we are working on in our classroom:

– Automatic recall of the addition tens and twenties facts

Doubles and near doubles addition facts

Double doubles (for example, 8+8=16 and 16+16=32)

100 facts (addition equations that equal 100)

Adding to the nearest 10 when solving two digit addition problems

Adding hundreds, tens and ones when solving three digit problems

– Using a range of efficient addition strategies during problem solving tasks.

In our classroom we use a variety of hands on games, strategy-based tasks, real life problems and websites/apps to develop our mathematical skills.

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Here are some addition websites for you to try!

Number Bonds Machine

Hit the Button

Snappy Maths

Speed Grid Addition

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Do you have a favourite addition website?

What addition strategies do you enjoy using?

When do you use addition in everyday life?