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Videos uploaded by user “Ian Bailey-Mortimer”
Kinds of data
 
02:27
Kinds of data: Categorical (nominal & ordinal) and numerical (discrete & continuous)
Views: 50296 Ian Bailey-Mortimer
Converting between true and compass bearings
 
04:45
Converting between true bearings (e.g. 073°T) and compass bearings (N73°E). NB - this is not about adjusting for magnetic variation - that's a whole different story!
Views: 19109 Ian Bailey-Mortimer
Analysing stem and leaf plots
 
03:09
Calculating positional statistics (median, quartiles, range and inter-quartile range IQR) from a stem-and-leaf plot. Five number summary.
Views: 8745 Ian Bailey-Mortimer
Decimal time conversion
 
14:47
Converting time measurements between separate hours,minutes,seconds and decimal values
Views: 27654 Ian Bailey-Mortimer
Central tendency from grouped data in frequency tables
 
13:24
Using frequency tables with grouped data to calculate the mean, mode and median
Views: 45678 Ian Bailey-Mortimer
Surface area and volume: composite shape with a cylinder
 
09:53
Calculating the surface area and volume of a composite shape that includes a cylinder
Views: 4663 Ian Bailey-Mortimer
True bearings and compass bearings
 
10:04
True bearings (e.g. 073°T) and compass bearings (e.g. N73°E). NB - this is just about the way we write bearings, and what they mean - *not* magnetic variation - that's a whole different story!
Views: 13724 Ian Bailey-Mortimer
Euclidean Geometry 3/4: Transversals
 
03:16
Basic relationships between angles around transversals crossing parallel lines
Views: 1883 Ian Bailey-Mortimer
Euclidean Geometry 4/4: Problem solving
 
04:01
Solving some multi-step problems with Euclidean Geometry
Views: 10916 Ian Bailey-Mortimer
Factorising using the Distributive Law
 
10:22
Using the distributive law to factorise (or factorize, if you prefer) algebraic expressions - factorising as the opposite of expanding - numeric factors - algebraic factors - combinations
Views: 5000 Ian Bailey-Mortimer
Grid references
 
02:57
Eastings and northings 4-digit and 6-digit grid references Always use the lower left corner of the square to identify the easting and northing
Views: 47200 Ian Bailey-Mortimer
Euclidean Geometry 1/4: Introduction, adjacent angles
 
06:50
Introduction to Euclidean Geometry Basic rules about adjacent angles
Views: 4254 Ian Bailey-Mortimer
Box plots, range and inter-quartile range
 
07:44
Five-number summary and drawing a box-and-whisker plot Calculating range and interquartile range (measures of spread)
Views: 7665 Ian Bailey-Mortimer
Collecting data
 
08:47
Populations & samples, census vs survey Open & closed questions Bias - questionnaire, sampling and interpretation
Views: 48225 Ian Bailey-Mortimer
Solving equations using the Balance method
 
09:23
Use inverse operations to "unwrap" the variable one step at a time Balance: whatever you do on one side of the equal sign, you also do on the other Good setting out is vital: work down the page, keep equal signs and equal things underneath each other, leave plenty of empty space Several examples of solving simple linear equations using the Balance method
Views: 12064 Ian Bailey-Mortimer
Using the median formula
 
07:48
Calculating the median by using the formula (n+1)/2 to locate its position in a sorted list of scores.
Views: 10323 Ian Bailey-Mortimer
Tree diagrams
 
07:17
Using Tree Diagrams to model compound events. Tree Diagrams are more flexible than Grids, because they can model more than two actions, or actions that are not independent (eg. drawing counters without replacement).
Views: 5962 Ian Bailey-Mortimer
Euclidean Geometry 2/4: Triangle and quadrilateral theorems
 
04:04
Basic triangle and quadrilateral rules
Views: 3419 Ian Bailey-Mortimer
Theoretical probability
 
06:27
Theoretical probability as the eventual relative frequency after a large number of trials Theoretical probability as the relative number of favourable outcomes Expected frequency
Views: 1149 Ian Bailey-Mortimer
Numeracy
 
02:45
What is numeracy? "The capacity, confidence and disposition to use mathematics" in everyday life. (From Australian Curriculum: Mathematics http://www.australiancurriculum.edu.au/Mathematics) -- This video has been produced by Ian Bailey-Mortimer for use in CR161 Introduction to Mathematics and Numeracy at Christian Heritage College http://www.chc.edu.au/
Views: 4542 Ian Bailey-Mortimer
Classifying 3D shapes
 
07:51
Polyhedra, Platonic solids, prisms and pyramids For more about Euler's formula and why there are only 5 Platonic solids see http://plus.maths.org/content/eulers-polyhedron-formula Credits: Many 3D shape graphics used in this video are from http://www.mathsisfun.com/geometry/ - Copyright © 2012 Rod Pierce, MathsIsFun.com. Used with permission. Animations of the Platonic solids are from Wikipedia http://en.wikipedia.org/wiki/Platonic_solid Animations of cross-sections were created using Trimble SketchUp http://www.sketchup.com/ and recorded using CamStudio http://camstudio.org/
Views: 6396 Ian Bailey-Mortimer
Fractions: Addition and subtraction 3/4 - three terms
 
03:44
Adding and subtracting fractions using the standard algorithm (LCD = Lowest Common Denominator) Video 3 of 4: adding three (or more!) fractions
Views: 2527 Ian Bailey-Mortimer
Central tendency from frequency tables
 
14:09
Using frequency tables to calculate the mean, mode and median
Views: 483 Ian Bailey-Mortimer
Australian Curriculum: Mathematics
 
07:52
A brief introduction to the Australian Curriculum: Mathematics http://www.australiancurriculum.edu.au/Mathematics Links to other relevant documents: Melbourne Declaration http://www.mceecdya.edu.au/verve/_resources/National_Declaration_on_the_Educational_Goals_for_Young_Australians.pdf Shape papers: General http://www.acara.edu.au/verve/_resources/Shape_of_the_Australian_Curriculum.pdf Mathematics http://www.acara.edu.au/verve/_resources/Australian_Curriculum_-_Maths.pdf -- This video has been produced by Ian Bailey-Mortimer for use in CR161 Introduction to Mathematics and Numeracy at Christian Heritage College http://www.chc.edu.au/
Views: 1456 Ian Bailey-Mortimer
Surface area: simple examples
 
10:59
Calculating the surface area of simple 3D shapes
Views: 1511 Ian Bailey-Mortimer
Why teach Mathematics?
 
04:56
Why teach Mathematics? Uses of mathematics Conceptions of mathematics and learning Mathematics as a language -- This video has been produced by Ian Bailey-Mortimer for use in CR161 Introduction to Mathematics and Numeracy at Christian Heritage College http://www.chc.edu.au/
Views: 199 Ian Bailey-Mortimer
Australian time zones
 
09:34
Australian time zones Daylight saving Greenwich Mean Time (GMT), UTC and the International Date Line Solving problems involving flights between different time zones
Views: 2030 Ian Bailey-Mortimer
Units for measurement
 
04:58
Relative "units" and the need for agreed absolute referents The SI metric units for length (metre) and time (second) Standard SI prefixes -- This video has been produced by Ian Bailey-Mortimer for use in CR161 Introduction to Mathematics and Numeracy at Christian Heritage College http://www.chc.edu.au/ and as a result the scope is limited to what is needed for that course.
Views: 173 Ian Bailey-Mortimer
Fractions: Addition and subtraction 4/4 - mixed numbers
 
05:01
Adding and subtracting fractions using the standard algorithm (LCD = Lowest Common Denominator) Video 4 of 4: Adding mixed numbers
Views: 398 Ian Bailey-Mortimer
Surface area and volume: composite rectangular example
 
08:53
Calculating the surface area and volume of a composite shape with rectangular pieces
Views: 495 Ian Bailey-Mortimer
Presenting data
 
03:12
Presenting data using tables, displays and graphs
Views: 1040 Ian Bailey-Mortimer
Polygons
 
05:35
Polygons Classifying polygons: (ir)regular, concave/convex, no. of sides
Views: 100 Ian Bailey-Mortimer
How to do a maths exam - and succeed!
 
07:35
Exam technique for a maths exam, part 2 - During the exam The night before When you get the exam Follow your priorities When you're done Of course, what I say here is also applicable to non-maths exams!
Views: 1437 Ian Bailey-Mortimer
Building a road step 7 alternate routes
 
06:09
How to use a topographic contour map to draw a profile from a non-straight route. (This video explains part of a Year 12 Maths A assignment about designing a road.)
Views: 101 Ian Bailey-Mortimer
Solving percentage problems using ratios
 
08:41
Using ratios to solve total-from-part and part-from-part percentage problems.
Views: 438 Ian Bailey-Mortimer
Building a road step 3 profile part 1
 
05:32
Drawing the profile from a topographic contour map - part 1 of 2 (This video explains part of a Year 12 Maths A assignment about designing a road.)
Tessellation
 
00:53
Tessellating a flat plane with many copies of the same shape(s) repeated in a geometric pattern. Don't forget to look up M.C. Escher!
Views: 831 Ian Bailey-Mortimer
Expanding using the Distributive Law
 
07:36
Using the distributive law to expand algebraic expressions - Numeric example - Simple algebraic examples - Harder examples
Views: 2828 Ian Bailey-Mortimer
Measurement concepts
 
01:10
Basic concepts for measuring shapes: length, perimeter, area, surface area, volume, capacity
Views: 255 Ian Bailey-Mortimer
Building a road step 3b vertical exaggeration mp4
 
01:58
Calculating vertical exaggeration for a profile drawn from a topographic contour map. (This video explains part of a Year 12 Maths A assignment about designing a road.)
Order of Operations
 
04:46
The standard (universal!) mathematical convention for the order in which operations must be carried out to evaluate an expression, with some simple examples.
Histograms
 
01:54
What is a histogram Histograms for grouped data
Views: 437 Ian Bailey-Mortimer
Venn diagrams
 
09:03
Drawing and using Venn diagrams to solve problems involving two or three criteria that may not be mutually exclusive
Views: 163 Ian Bailey-Mortimer
Perimeter: examples with circular arcs
 
07:27
Calculating perimeter of shapes with circular parts
Views: 142 Ian Bailey-Mortimer
Unit conversion 3/3 - volume
 
04:40
Converting between different SI units of volume and capacity
Views: 382 Ian Bailey-Mortimer
Fractions: Division
 
08:57
Dividing fractions using the standard algorithm
Solving bearings problems using trigonometry
 
12:07
Using trigonometry to solve mathematical problems involving bearings.
Views: 36934 Ian Bailey-Mortimer
Writing and evaluating expressions
 
09:43
Writing mathematical expressions from word descriptions Evaluating expressions using the correct order of operations
Views: 1092 Ian Bailey-Mortimer