Maths

Marshmallow Maths

Posted on May 8, 2013 in Maths

Marshmallow Maths

Have you ever used marshmallows in your maths class? Today, Grade 4 had a sweet morning! We made 3D shapes with marshmallows! We used toothpicks to represent the edges and the¬†marshmallows to represent the vertices. Ms.O’Dwyer gave us clues and we had to work out which object to make. Then we had to record its name, as well as how many faces, edges and vertices that shape had. Sometimes it was difficult to work out whether to build a prism or a pyramid. The hardest shape was the one with...

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Can you make a square meter that’s not a square?

Posted on Apr 19, 2013 in Maths

Can you make a square meter that’s not a square?

Can you make a square meter that’s not a square? We did! Last week, we enjoyed an investigation into area and perimeter. We were challenged to make two shapes with the same area of exactly 1 square meter but different perimeters. All our shapes looked different: triangles, hexagons, octagons and even an icosagon (20-sided polygon)! In each case, when we changed the form of the shape, the perimeter increased. At the end of the task, we recorded our understanding in a mathematical...

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Patterns help us solve problems.

Posted on Feb 21, 2013 in Maths

Patterns help us solve problems.

In this math unit, we learned about patterns. We learned to find and create many types of patterns. We made repeating patterns and growing patterns with numbers. We worked out the rules and used these to make predictions. We even learned to solve patterns with algebra. We especially enjoyed working in groups to solve problems with matchsticks. Some of them were hard but our patterning skills helped us. Have a look at our patterns video below! By Na Youn, Hyun Seo & Kaopoon...

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Groovy Geometry

Posted on Nov 30, 2012 in Maths

Groovy Geometry

We have recently completed our math investigation into geometry. After learning about the work of Greek mathematicians during our Ancient Civilizations Unit, it was our turn to make discoveries! Using compasses, rulers and protractors, we were challenged to construct 2D shapes, tessellations and patterns. We discovered the properties of circles, strategies for folding right-angled triangles and the mysteries of pentagons. The diagonals of pentagons hold many secrets! In these hands-on...

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What can you do with 5000 years & 1 piece of paper?

Posted on Nov 7, 2012 in Ancient Civilisations, Maths

What can you do with 5000 years & 1 piece of paper?

This week we had a challenge: to create large-scale timelines to represent each ancient civilisation. Our timelines needed to include: an appropriate, accurate scale dates from 3000 B.C.E. to 2000 A.C.E 10 significant historical events We were given a blank piece of paper and access to all information sources and measurement tools in our classroom. We needed all our Math and research skills to complete the task. Here we are, hard at work:   Here are some of our finished timelines:  ...

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Geometry Hunters: Ancient Greek legacies in our school!

Posted on Oct 16, 2012 in Ancient Civilisations, Maths

Geometry Hunters: Ancient Greek legacies in our school!

Did you know that the ancient Greeks made lots of mathematical discoveries? This week, we have been looking at ancient architecture and learning about lines, angles and 2D shapes.¬†We still use ancient Greek geometry in our art, architecture, music and games today. In small groups, we hunted for geometry around our school. We earned a point for every mathematical legacy we could find, name and measure. Here is a group of Geometry Hunters and their findings:     What did you learn...

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