### Archive

Archive for February, 2012

## Percentages – Christmas Shopping

Percentages – Christmas Shopping

Introduction Videos:

Worksheet and answers: Percentages Christmas Vouchers2

Categories: Lessons

## Trial and Improvement – Archery

Trial and Improvement – Bowman

Bowman 2 Link or bring in on memory stick

See Resource Bank for worksheet

Lesson Plan:

Starter – Put Bowman 2 on the board and challenge a student to a game, after 2 games, ask why you have put Bowman on. They will most likely say angles – ask about the strategy involved when playing…. Trial and Improvement

Main – Use the Spreadsheet and emphasise importance of layout. In the method, show the class how to do the ‘checker.’ Afterwards get students to do the worksheet.

Plenary – Get the students to write a paragraph on how they would solve a trial and improvement question.

Categories: Lessons Tags: , , ,

## Sine Rule – Belfast

Sine Rule - Belfast

Sine Rule – Belfast

Mission Brief level 1 – Sine Rule

Mission Brief level 2 – Sine Rule

Mission Brief level 3 – Sine Rule

Mission Brief level 4 – Sine Rule

Lesson Plan:

Starter: Have some trigonometry questions on the board (basic) and play Dad’s Army intro to the class as they enter

Main: Show them the Belfast Powerpoint and ask them what the 4 pictures are off. Tell them about the Belfast Blitz and about the planned Bismarck attack on Harland and Wolff. Get them to arrange the proof of the Sine Rule. Show them an example.

They can choose their own missions.

Plenary: Rate learning objectives, discuss how to tell the different between Pythagoras, Trigonometry and Sine Rule questions

Categories: Lessons Tags: , , , ,

## Least Common Multiple – Zebra crossing

Zebra Crossing

While watching two lights beside a Zebra crossing, I noticed they were flashing at different speeds. The one on the left flashed every 3 seconds and the one on the right flashed every 4 seconds.

• If they have both just flashed at the same time, after how many seconds will they both flash together again?
• If another pair of lights flash every 1.5 and 3.5 seconds, when will they both flash together?
• Two lighthouses shine every 14 and 21 seconds, when will they both shine together?

## Currency – Euro note

Note

The current tourist rate is £1 : 1.19 euros

• What would a £50 be worth in euros?
• What would the note be worth in pounds?
• A watch costs £40 in London or 46 euros in Paris, which is better value?

## Pi – Cake

Pi Cake

Above is a Pi Cake….. thanks to one of my year 11′s for baking this!

• The diameter of the cake is 4.5cm, what is the circumference of the cake?
• A larger cake is made that has a circumference of 50cm, what would the diameter of that cake be?
Categories: Starters Tags: , , ,

## Pythagoras – Cake

Pythagoras Cake

Here’s one way to help you to remember Pythagoras’ Theorem. Thanks to one of my past Year 11 students for making this!

• If the two shorter sides of a right angled triangle are 5cm and 8cm, what would the hypotenuse be?
• If the hypotenuse is 20cm and one shorter side is 4cm, what is the length of the other shorter side?
Categories: Starters Tags: ,

## Route planning – London underground

Underground map

• How would you get from Camden Town to Marble Arch?
• How would you get from Notting Hill Gate to Green Park?
• How would you get from High Street Kensington to Holborn?
Categories: Starters Tags: , , , ,

## Number – Electricity meter

Electricity meter

The electricity meter was read in January and it was 10431. The picture above was taken in June.

• How many units have been used between January and June?
• If each unit costs 25p, how much would the units cost in total?
• It is expected that the house will use 450 unis by next January, what will the meter read then?