How_To_Be_Good_At_Math
GEOMETRY • ROTATIONAL SYMMETRY 259 Let’s see how many times this three-pointed shape can fit into its outline. First, we rotate ...
260 GEOMETRY •^ REFLECTION Lines of reflection A shape and its reflected image are always on opposite sides of the line of refle ...
GEOMETRY • REFLECTION 261 Make a reflection pattern You can use reflection to make symmetrical patterns. Draw a horizontal and a ...
262 GEOMETRY •^ ROTATION Rotation Rotation is a kind of transformation, in which an object or shape turns around a point called ...
GEOMETRY • ROTATION 263 Make a rotation creation All you need to make your own rotation pattern is some card and paper, a pin, a ...
264 GEOMETRY •^ TRANSLATION What is translation? Translation, like reflection or rotation, is a kind of transformation. With tra ...
GEOMETRY • TRANSLATION 265 Using a grid to translate a shape When we use a grid to translate a shape, we use the word “units” to ...
266-267_Chapter_5.indd 266 29/02/2016 16:39 ...
STATISTICS Statistics is about collecting data and finding out what it can tell us. The clearest way to organise and analyse a l ...
268 STATISTICS •^ DATA HANDLING Which fruit do you prefer? Orange Apple Grapes Watermelon Banana Data handling Statistics is oft ...
STATISTICS • DATA HANDLING 269 This table, called a frequency table, shows the number of children that preferred each type of fr ...
270 STATISTICS •^ TALLY MARKS Tally marks We can use tally marks to count things quickly when we’re collecting data, such as ans ...
STATISTICS • FREQUENCY TABLES 271 Frequency tables A frequency table is a way of summarizing a set of data. The table shows you ...
272 STATISTICS •^ CARROLL DIAGRAMS Carroll diagrams A Carroll diagram shows how a set of data, such as a group of people or numb ...
STATISTICS • CARROLL DIAGRAMS 273 When we read across the first row (blue) we see all the even numbers. The second row (red) lis ...
274 STATISTICS •^ VENN DIAGRAMS Art class No activities Remember, a set is a collection of things or numbers, or a group of peop ...
STATISTICS • VENN DIAGRAMS 275 Art class Let’s join the music and soccer sets together so that their circles overlap. When we jo ...
276 STATISTICS •^ AVERAGES Types of average We can use three different types of average to describe a set of data, such as the h ...
STATISTICS • THE MEAN 277 The mean When people talk about the average, they are usually talking about the mean. We work it out b ...
278 STATISTICS •^ THE MEDIAN Add one giraffe What happens if another giraffe, with a height of 4.2 m, joins the group to make si ...
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