Learn what crossover point you should choose in this Howcast car stereo video with expert Movin' On.

DIY SCI host Steve Spangler demonstrates how frequencies will create different patterns of sand on a speaker and how a saw can be turned into a musical instrument!

Pupil outcome: I can construct pictograms from data. Key learning points: - Data presented as a list can be represented as a pictogram - Data presented in a table can be represented as a pictogram - The icons chosen should not be...

Pupil outcome: I can compare and contrast the usefulness of the different representations when calculating theoretical probabilities. Key learning points: - The probability of an outcome can be calculated from each representation. -...

Pupil outcome: I can calculate the mean from a grouped frequency table. Key learning points: - The mean is a measure of central tendency. - The mean can only be estimated with a grouped frequency table. - Calculating this from a grouped...

Pupil outcome: I can use the fx-991CW to perform calculations with data. Key learning points: - Some calculators can perform more than just basic calculations. - The fx-991CW can produce a statistical summary of a set of data. - The...

Pupil outcome: I can use the fx-CG50 to perform calculations with data. Key learning points: - Some calculators can perform more than just basic calculations. - The fx-CG50 can produce a statistical summary of a set of data. - The...

Pupil outcome: I can use the fx-83/85GT CW to perform calculations with data. Key learning points: - Some calculators can perform more than just basic calculations. - The fx-83/85GT CW can produce a statistical summary of a set of data....

Pupil outcome: I can construct bar charts from data. Key learning points: - Data presented as a list can be represented as a bar chart - Data presented in a table can be represented as a bar chart - The type of data determines how the...

Pupil outcome: I can find theoretical probabilities from a table showing the possible outcomes for one event. Key learning points: - The probability of an outcome can be found by considering a table showing all possible outcomes. - The...

Pupil outcome: I can construct/interpret composite bar charts and bar-line charts. Key learning points: - Certain data is suitable for a composite bar chart or bar-line chart. - The shape of the graph can be estimated from the data. -...

Pupil outcome: I can use measures of central tendency and spread to compare two data sets in context. Key learning points: - Data can be hard to compare when presented in lists and tables. - Statistical summaries can be calculated to...

Pupil outcome: I can construct/interpret bar charts and pictograms. Key learning points: - Certain data is suitable for a pictogram or bar chart. - The shape of the graph can be estimated from the data. - For larger data sets, technology...

Pupil outcome: I can describe what ultrasound is and explain its properties, and also describe some uses of ultrasound. Key learning points: - Sound waves of frequency below 20 Hz usually cannot be heard by humans, so are called...

Pupil outcome: I can explain how sound waves cause sounds to be heard, and describe the range and limits of human hearing. Key learning points: - Sound waves cause our eardrums, tiny bones within our ears, and the cochlea to vibrate. -...

Pupil outcome: I can calculate the mode from data presented in a frequency table and different graphs. Key learning points: - The mode can be calculated from an ungrouped frequency table. - The mode can be calculated from a bar chart. -...

Pupil outcome: I can calculate probabilities from tables and two-way tables. Key learning points: - The probability of an outcome can be found by considering a table - The probability of an event can be found by considering a table...

Pupil outcome: I can construct bar charts from data using technology. Key learning points: - Bar charts can be constructed quickly using spreadsheets. - Bar charts can be constructed quickly using Desmos. - A template file can be used to...

Pupil outcome: I can interpret pie charts. Key learning points: - Knowing the angle size for a sector allows calculation of the frequency. - By knowing the total, statements can be made comparing the data. - Different pie charts may have...

Pupil outcome: I can construct pie charts from data presented in a number of different ways using technology. Key learning points: - Pie charts can be constructed quickly using Excel. - The angle of each part can be quickly calculated in...

Pupil outcome: I can calculate probabilities from probability trees and Venn diagrams. Key learning points: - The probability of an outcome can be found by considering a tree diagram - The probability of an event can be found by...

Pupil outcome: I can draw and use a frequency tree to calculate probabilities. Key learning points: - There are key differences between frequency trees and probability trees - Frequency trees are constructed using frequencies - Frequency...

Pupil outcome: I can interpret both pictograms and bar charts. Key learning points: - Pictograms represent data through images. - Bar charts represent data using the heights of bars. - A key and/or labelled axes are important for...

Pupil outcome: I can calculate the mean from data presented in a frequency table and different graphs. Key learning points: - The mean can be calculated from a line graph. - The mean can be calculated from an ungrouped frequency table. -...