# Magnificent multiplication Post by Bill and Nali

In 3/4w we have been learning about multiplication every week we test our multiplication skills by taking a test. We have to practice a  multiplication to be ready for the test.                                                                                                               Here are what some people are practicing:

• 2 times tables
• 3 times tables
• 4 times tables
• 5 times tables
• 6 times tables
• 7 times tables
• 8 times tables
• 9 times tables
• 10 times tables
• 2 extension
• 3  extension
• 4  extension
• 5  extension
• 6  extension
• 7  extension
• 8  extension
• 9  extension
• 10  extension

What is your favourite times table and why?

In addition, some strategies we have been practising are:

• Bridge to ten – where you add to the closest ten
• Using the algorithm where you add the ones first and you might need to rename.
• Splitting a number into an easier number to add. For example splitting a number into tens and ones then adding them together.
• Using the number line to add easier numbers.
• Counting on by ones
• Skip counting by 2s, 3s, 4s and so on.

In subtraction, some strategies we have been practising are:

• Algorithm where you take away the ones first and then you may need to rename.
• Counting backwards by a counting pattern
• Adding on from a smaller number
• Using estimation to check our answers
• Taking away the ones and then tens

What other strategies do you know? What else do you know about addition and subtraction? How might you use this in real life?

# Shape – post by Georgie

This term, one of our math topics has been shape. Our focus was in symmetry, which included rotational symmetry and reflection symmetry. We did 4 different activates and they were:

• drawing rotational and reflection shapes
• putting pictures in grids
• using the computer for activities
• using pieces of cut out paper to make pictures

We also learnt about tessellation. This is when shapes are joined together with no gaps. We learnt about MC Escher, from the Netherlands, who made lots of tessellation artworks and optical illusions. So we got one piece of card that we drew then cut out to make our own tessellations. Here are some of the patterns we made:

Where have you seen tessellations in real life? Have you ever learnt about Escher? If so, what do you know about him? Have you seen symmetry in real life? If you have can you tell us?

# Year 3/4 Maths Challenge – Post by Lucas

This term some year 3/4s did the maths challenge and it was a lot of fun! We had three weeks to do the problems and we got this little booklet where all the problems were. We could either work by ourselves or with a group up to 3 people. The problems included shapes, turning around 180 degrees, times table, drawing tables and lots more maths thing. We had to work it out in our maths book. When the 3/4s finished, we handed our maths book in and waited for the results. We had lots of fun.

Remember you can do anything if you put you mind into it [made by Lucas]

What is your favourite topic in maths and why?

# Data

This term, 3/4W have been learning about data. These are some of the graphs we have made.

Graph 1

Graph 2

Graph 3

Graph 4

What do you know about data? Can you write a statement or a question for one of the graphs?

# Shape in 3/4W

For the past couple of weeks, 3/4W have been learning about shape. We have learnt that:

• Polyhedrons are 3D shapes that have flat faces and can stand up.
• Pyramids have an apex and triangular faces that meet at a point. They can stand.
• Spheres have no faces but they have a curved surface.
• Equilateral triangles are triangles with all the same size angles.
• Squares are a special type of rectangle because they have 4 right angles, like a rectangle. But rectangles are NOT squares.

We also entered the Victorian Coding Challenge by producing some shapes using Scratch. Have a look at some of the things we made!

https://scratch.mit.edu/projects/62398960/ Star in the sea

What other things do you know about 2D or 3D shapes?