Problem Solving - Puzzle 6 The Tricky Triangle

Can you get the triangle pointing downwards by just moving 3 coins? Spend some time trying to figure it out!

Watch the clip below to see how it's done.
Tricky Triangle Puzzle from Magh Éne College on Vimeo.

Problem Solving - Puzzle 7 Sticky Squares

Look at the image on the screen. There are 5 squares. The aim is to move 3 pieces of wood to leave 3 squares remaining. Good Luck!

Junior Cert Maths - Probability

Good lesson on tree diagrams from Aoise and Katie

Junior Cert Maths- Factorisation

Problem Solving - Riddle

1.
My life is often a volume of grief, your help is needed to turn a new leaf. Stiff is my spine and my body is pale, but I'm always ready to tell a tale. What am I?

2.Brothers and sisters, I have none but this man's father is my father's son. 
Who am I looking at?

3.You are shown two doors - one leading to hell and the second one to heaven and only the door guards know what is behind the doors. One guard is always lying and the other is always telling the truth (of course, you don't know who is lying). You can ask only one guard one question. 
What question can get you to heaven?



4.
If you had a 5-liter bowl and a 3-liter bowl, and an unlimited access to water, how would you measure exactly 4 liters?



5.
If someone says "I always lie", are they telling the truth? Or are they lying?

Polygons

Please click here.

Mr.Sweeney

DCU Talent Search

ARE YOU A TALENTED MATHEMATICIAN?!

DCU are running a talent search. Details are available here.

You can download the application form by clicking here.

Go on - You know you want to!

Geometry - Congruent Triangles

Explore the concept of a congruent triangle by clicking here.

There is a simpler version of this exercise available by clicking here.

Here is a simple lesson on introducing congruent triangles



See below for a worked out example on how to prove 2 triangles are congruent





Click here to do a quick test!

Best of luck.

Mr.Sweeney.

Geometry 1

The word ‘geometry’ comes from the Greek

words ‘geo’, meaning earth, and ‘metria’, 

meaning measure.

Get some practice on the definitions by taking the quiz.

There is a slightly more difficult quiz available here.



This one here is aimed more at leaving cert students.

Click here for further practice.

There is an interactive game available here!


Good luck.

Mr.Sweeney.

Logic

Have a go at these!

1. Simple logic

2.Even more fun

Mr.Sweeney

Perimeter, Area and Volume

This is an excellent worksheet for the Perimeter, Area and Volume chapter!

Shapes and Vocabulary

Enjoy. Mr.Sweeney

Probability

Have a go at this simple worksheet on probability.

I have included answers on the sheet also.

Good luck.

Mr.Sweeney.

Probability - Kieran Sweeney - Worksheet

Slopes!

Reciprocals!

Find out some basic information of reciprocals here.

Here is a worked out example!

Enjoy.

Mr.Sweeney.

Why do I need mathematics?

Stem and Leaf plots

1. Very basic stem and leaf plots...

2. A student talks us through an example ...


3. A more complicated example....

Good luck with the revision.

Mr.Sweeney.

Distance, Speed and Time

• Find an on-line revision guide by clicking here.

• There is a helpful worksheet available by clicking here.

• Here are two worked exam style questions...

Good luck.

Mr.Sweeney.

Tree Diagrams

• There are some excellent worked out examination style problems available here.

• There is an on-line revision guide available here.

• Here is another sample exam question worked out fully.

Good luck.

Mr.Sweeney.

Probability terms!

What do these terms mean?!

Get out the dictionaries!

Mr.Sweeney.