Transum Maths Software

Angles

There are 366 different Starters of The Day, many to choose from. You will find in the left column below some starters on the topic of Angles. In the right column below are links to related online activities, videos and teacher resources.

A lesson starter does not have to be on the same topic as the main part of the lesson or the topic of the previous lesson. It is often very useful to revise or explore other concepts by using a starter based on a totally different area of Mathematics.

Main Page

Angles Starters:

Air Traffic Control: Work out which aircraft are in danger of colliding from their positions and direction of travel. An exercise in understanding bearings.

Angle Estimates: Estimate the sizes of each of the angles then add your estimates together.

Pie Chart: An exercise in estimating what the sectors of a pie chart represent.

Sectors: Work out which sectors fit together to make complete circles. Knowledge of the sum of the angles at a point will help find more than one correct solution to this puzzle.

Square Angles: Find a trapezium, a triangle and a quadrilateral where all of the angles are square numbers.

 

Small images of these Starters ::  Index of Starters


Angles Advanced Starters:

Angle Thinking: Find the range of possible angles, x, for which tan x > cos x > sin x

Curved Angles: How many right angles are there in a semicircle?

Geometry Snack: Find the value of the marked angle in this diagram from the book Geometry Snacks

Hands Together: The hands of a clock are together at midnight. At what time are they next together?

Triangle or Quadrilateral: Can a quadrilateral have a straight angle?

Index of Advanced Starters


Suggested

Estimating Angles

Estimating Angles

Estimate the size of the given acute angles in degrees.

The short web address is:

Transum.org/go/?to=estang

 

Curriculum for Angles:

Year 5

Pupils should be taught to know angles are measured in degrees: estimate and compare acute, obtuse and reflex angles more...

Pupils should be taught to draw given angles, and measure them in degrees (°) more...

Pupils should be taught to identify:
- angles at a point and one whole turn (total 360°)
- angles at a point on a straight line and a turn (total 180°)
- other multiples of 90° more...

Pupils should be taught to use the properties of rectangles to deduce related facts and find missing lengths and angles more...

Year 6

Pupils should be taught to draw 2-D shapes using given dimensions and angles more...

Pupils should be taught to compare and classify geometric shapes based on their properties and sizes and find unknown angles in any triangles, quadrilaterals, and regular polygons more...

Pupils should be taught to recognise angles where they meet at a point, are on a straight line, or are vertically opposite, and find missing angles. more...

Years 7 to 9

Pupils should be taught to draw and measure line segments and angles in geometric figures, including interpreting scale drawings more...

Pupils should be taught to describe, sketch and draw using conventional terms and notations: points, lines, parallel lines, perpendicular lines, right angles, regular polygons, and other polygons that are reflectively and rotationally symmetric more...

Pupils should be taught to derive and illustrate properties of triangles, quadrilaterals, circles, and other plane figures [for example, equal lengths and angles] using appropriate language and technologies more...

Pupils should be taught to apply the properties of angles at a point, angles at a point on a straight line, vertically opposite angles more...

Pupils should be taught to understand and use the relationship between parallel lines and alternate and corresponding angles more...

Pupils should be taught to derive and use the sum of angles in a triangle and use it to deduce the angle sum in any polygon, and to derive properties of regular polygons more...

Pupils should be taught to apply angle facts, triangle congruence, similarity and properties of quadrilaterals to derive results about angles and sides, including Pythagoras’ Theorem, and use known results to obtain simple proofs more...

Years 10 and 11

Pupils should be taught to {apply and prove the standard circle theorems concerning angles, radii, tangents and chords, and use them to prove related results} more...

Exam-Style Questions:

There are almost a thousand exam-style questions unique to the Transum website.

Feedback:

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Could we have some on angles too please?"

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Notes:

Pupils should understand that angles represent an amount of turning and be able to estimate the size of angle. When constructing models and drawing pupils should be able to measure and draw angles to the nearest degree and use appropriate language associated with angles.

Pupils should know the angle sums of polygons and that of angles at a point and on a straight line. They will learn about angles made in circles by chords, radii and tangents and recognise the relationships between them.

Pupils will work with angles using trigonometry, transformations and bearings. In exams pupils are often instructed that while non-exact answers should be given to three significant figures, angle answers should be given to one decimal place.

Angles Teacher Resources:

Kite Maths: Can you make a kite shape from a single A4 size sheet of paper using only three folds?

Angle Theorems: Diagrams of the angle theorems with interactive examples.

Polygon Angles Animation: Barbara Bug walks around a regular hexagon turning through each of the exterior angles as she goes.

Angle Theorem Kim's Game: A memory game to be projected to help the whole class revise the circle angle theorems.

Plane Bearings: A visual aid designed to help pupils estimate three figure bearings.

Circle Theorems: Diagrams of the circle theorems to be projected onto a white board as an effective visual aid.

Geometry Toolbox: Create your own dynamic geometrical diagrams using this truly amazing tool from GeoGebra.

Angles Activities:

Estimating Angles: Estimate the size of the given acute angles in degrees.

Measuring Angles: Measure the size of the given angles to within two degrees of their actual value.

Angle Points: Apply the properties of angles at a point, angles on a straight line and vertically opposite angles.

Pie Charts: Develop the skills to construct and interpret pie charts in this self-marking set of exercises.

Angles in a Triangle: A self marking exercise involving calculating the unknown angle in a triangle.

Angle Parallels: Understand and use the relationship between parallel lines and alternate and corresponding angles.

Angle Chase: Find all of the angles on the geometrical diagrams.

Scale Drawings: Measure line segments and angles in geometric figures, including interpreting scale drawings.

Online Logo: An online version of the Logo programming language with 30 mathematical challenges.

Polygon Angles: A mixture of problems related to calculating the interior and exterior angles of polygons.

Circle Theorems Exercise: Show that you understand and can apply the circle theorems with this self marking exercise.

Circle Theorem Pairs: A pairs game based around ten theorems about the angles made with chords, radii and tangents of circles.

Snooker Angles: An online game for one or two players requiring an ability to estimate angles as bearings.

Angles Mixed: Find the unknown angles by using the basic angle theorems.

Proof of Circle Theorems: Arrange the stages of the proofs for the standard circle theorems in the correct order.

Geometry Toolbox: Create your own dynamic geometrical diagrams using this truly amazing tool from GeoGebra.

Common Trig Ratios Radians: A self-marking exercise on finding the exact values of sine, cosine and tangent of special angles given in radians.

Finally there is Topic Test, a set of 10 randomly chosen, multiple choice questions suggested by people from around the world.

Alternatively, for the more advanced student, there is an ever-growing collection of Exam-Style Questions with worked solutions on the topic of Angles.

Angles Investigations:

Tessellations: Drag the shapes onto the canvas to create tessellating patterns then try the tessellations quiz.

Angles Videos:

Angles video
Transum's Angles Video


Measuring Angles Video: Learn how to use a protractor to measure angles of any size. This video is to help you do the online, self-marking exercise.

Angle Points Video: See a demonstration of angles in a full turn around a point, angles together on a straight line and vertically opposite angles.

Angles in a Triangle Video: A reminder of how to use the fact that the angles in a triangle sum to 180 degrees to find the size of unmarked angles in triangular diagrams.

Angle Properties Song: A song about the angles made with parallel lines.

Polygon Angles Video: A concise reminder about angles, both interior and exterior, in regular and irregular polygons.

Angles in Depth: Craig Barton and Jo Morgan help you and your class understand angles through the means of kung fu.

The 50 Cent Riddle: A 50 cent coin has 12 equal sides. If you place two coins next to each other on a table, what is the angle formed between the two coins?

Ruler and Compass Construction: A demonstration of standard ruler and compass constructions

Angles Worksheets/Printables:

Measuring Lines and Angles: Practice using a ruler and protractor on this worksheet with answers provided.

Angle Chase Worksheets: A set of printable Angle Chase sheets on which pupils fill in the missing angles.

Polybragging Cards: Printable cards for the Polybragging game. Use the properties of polygons to win.

Angles External Links:

Links to other websites containing resources for Angles are provided for those logged into 'Transum Mathematics'. Subscribing also opens up the opportunity for you to add your own links to this panel. You can sign up using one of the buttons below:

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Suggested

Common Trig Ratios Radians

Common Trig Ratios Radians

A self-marking exercise on finding the exact values of sine, cosine and tangent of special angles given in radians.

The short web address is:

Transum.org/go/?to=commontrigratiosradians

 

Teaching Notes:

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Tuesday, January 21, 2014

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