Input & Output Devices

Break up into groups, use the internet, ictlounge.com or see the files at http://sdrv.ms/1irTRTL
to research each device.

• State whether each device is an Input Device, Output Device or a Sensor. 
• Give a brief explanation how it operates and what it is typically used for. 
• List some advantages and disadvantages.
• Any other information of interest.

Present back to the class and be prepared to answer questions.

• Try the quiz.
• Fill in the blanks.
• Homework: Further investigation of sensors.

Angles, Lines and Polygons

Objectives:
To know that the angles of a triangle add up to 180°
Angle properties of parallel lines
To know that the sum of the interior and exterior angles of quadrilateral add up to 360°
Tangents and triangles in a semi-circle

The angles of a triangle add up to 180°

Angle properties of parallel lines

 

Interior Angles of Polygons

An Interior Angle is an angle inside a shape.

Triangles

The Interior Angles of a Triangle add up to 180°

90° + 60° + 30° = 180°	80° + 70° + 30° = 180°
It works for this triangle!	Let's tilt a line by 10° ... It still works, because one angle went up by 10°, but the other went down by 10°

Quadrilaterals (Squares, etc)

(A Quadrilateral has 4 straight sides)

90° + 90° + 90° + 90° = 360°	80° + 100° + 90° + 90° = 360°
A Square adds up to 360°	Let's tilt a line by 10° ... still adds up to 360°!
The Interior Angles of a Quadrilateral add up to 360°

Because there are Two Triangles in a Square

The interior angles in this triangle add up to 180° (90°+45°+45°=180°)

... and for this square they add up to 360° ... because the square can be made from two triangles!

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Exterior angles of a polygon add up to 360

 

Names of polygons

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The angle between the tangent and radius is 90°

A tangent to a circle is a line which just touches the circle.

Remember:
A tangent is always at right angles to the radius where it touches the circle.

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The triangle drawn on the diameter of a circle is always a right angles triangle

We could also rotate the shape around 180° to make a rectangle! It is a rectangle, because all sides are parallel, and both diagonals are equal. And so its internal angles are all right angles (90°).

Order of operations, Indices

Order of Operations:

 

Order of operations with numbers and letters:

What is the meaning of "Like and unlike terms"?

Solving Equations:

Designing a website for Environmental Awareness Month (Week 6)

This week we will look at designing a website for environmental awareness month.

Lesson Objectives

• Deciding the structure of a website

• Using a 'storyboard' to  help design a website

 

Details about your web design project 

Example storyboard

Example website about animals

Test your knowledge

Volumes, angles and triangles

28/10/2013

Objectives:

• Calculate volumes of prisms and cuboids

• Determine volume and surface area of cylinders

• Constructing triangles given sides and angles

• What are 'nets'?

• Angle Facts

Cuboids

A cuboid is a box-shaped object.

Prisms

A prism has flat sides and the same cross section all along its length.

Cylinders

Using a protractor

Nets

A 'net' is the shape you get when you cut along the edges of a three dimensional object and lay it out flat.

Other objects:

Angle Facts

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Summarise in your copybook what we have learned today.

Powers, square and cubed roots, index notation

Objectives:

• Review square roots of fractions

• Know that square roots can be positive and negative

• Cubes and cube roots

• Know how to use a calculator for roots, cube 

• Index notation

 Sqaures and square roots: 

Can you find the square root button on your calculator?

Cubes and cube roots

Index Notation:

 

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Write down 5 words that you heard in today's lesson, see how many match with the person next to you.

Circles & Areas

Sunday 27 October 2013

Objectives:

• Review of circle terms, circumference and area.
• Calculate the areas of more complicated shapes
• Areas of rectangles and triangles
• Definition and areas of parallelograms and trapeziums

Circles:

Copy the diagram and label each of [AB], [CD], [EF], [GH]

 Answer is here.

Copy the picture below, label the green and blue sections:

Answer is here.

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Circle: Area and circumference

Area of a rectangle:

 

Area of a triangle:

More: Area of a triangle inside a rectangle

Area of a trapezium:

Note: this shape is also known as a trapezoid.

Area of a parallelogram:

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Bring your protractors tomorrow please! 

 

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Integers and factor trees

Integers, prime factors (and factor trees) 

Please review Natural Numbers.
Information about integers
Prime numbers and factor trees

Even more on factor trees

Try a self test.

Symmetry

The word 'symmetry' comes from [syn- together + metron measure]. There are different types of symmetry.

Rotational Symmetry

 

For this type of symmetry we are rotating (or turning) the shape around a point. Have a look at this page.

Try out symmetry artist.

Metric Units and Conversion

Information on the Metric System
Have a look at this page for the names of some very small and very large numbers.

Click below for information on converting from one unit to another:

Judging Websites - Week 5

This week we will look at how we can judge websites. We need to think about:

• Audience: who is the website trying to attract?
• Purpose: what is the website for?
• Fitness for purpose? Does the website do what we want it to?

 Click on the lesson link.


Have a look at this website for some website design ideas, some bad websites and what makes a website annoying!

Foreign Exchange, Speed and Approximating

Foreign Exchange

Speed, Distance, Time

Remember:

 

 

Approximations

We can give approximate answers to a certain number of
a) significant figures
b) decimal places

Have a look at

More at:

Working with Integers

Integers

Review natural numbers here:

 

Rules for adding and subtracting integers:

Click for more information and some practice questions:

 

 

 

Multiplying and Dividing integers

 

But why?! Have a look at some videos: