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# National Mathematics Day 2015

2015 is the International Year of Light.

Let's shine a light on the Proficiencies on Friday 21 August.

Have some fun (and integrate the Proficiencies) by exploring these rich tasks with your students.

*Click on 'more' to discover the many possibilities of "low threshold, high ceiling" tasks. These are sourced from NRICH, University of Cambridge. There is also commentary on integrating the Proficiencies.*

## Activity: Magic Vs

Place each of the numbers from 1 to 5 in a V shape so that the two arms of the V have the same total sum.

## Activity: Happy halving

Can you split various shapes in half so that the two parts are exactly the same?

## Activity: Reach 100

Your challenge is to place four different digits from 1 to 9 in a 2 x 2 grid that give four two-digit numbers which add to a total of 100.

## Activity: Strike it out

A game that involves calculations from crossing out numbers on a number line from 0 to 20.

## Linking it all together

Paper by Lynne McClure (former director of NRICH) on 'low threshold, high ceiling tasks', published 2015 in *Mathematics: Learn, Lead, Link* (Proceedings of the 25th Biennial Conference of the Australian Association of Mathematics Teachers Inc.).

maths_learn_lead_link_mcclure.pdf 543.00 kB