This is a place for the community of learners in Room 8-17 to learn and enjoy math. It is an extension of the classroom making it accessible 24 hours a day, 7 days a week.
You can use the Pythagorean relationship to know if a triangle is right triangle or not. The "a" and "b" on a right triangle represents the legs. The "c" is called the hypotenuse. If you add both side lengths of a and b you will get the hypotenuse. You can also determine a missing side length using one of this formulas
You can use different type of graphs to show a data.
Examples: Bar graphs, double bar graphs, circle graphs, line graphs and pictographs
Bar Graphs:Best for comparing across categories. It is a graph where the length of a bar represents a certain amount.
Advantage: It can be easily 2-3 data sets and it's visually strong. Disadvantage: Graph categories can be reordered to emphasize certain effects and can use only with discrete data.
Double Bar Graphs:Best for comparing two sets of data across categories. It is chart with rectangular bars with lengths proportional to the values that they represent.
Advantage: Beautiful and neatly constructed diagrams/charts are more attractive then
simple figures
Disadvantages: Can be tempting to compare too many things, graph becomes convoluted
and difficult to understand. Limited space for labelling with vertical bar graphs
Circle Graph:Best for comparing categories to the whole using percents. It used to compare parts and show their relationship to a whole. These work well for showing percentages and fractions.
Advantage:Visually appealing, Shows percent of total for each category
Disadvantage:No exact numerical data and it is hard to compare 2 data sets.
Line Graph:Best for showing changes over time.. It is a graph that uses line segments to show changes in data; the data usually represents a quantity changing over time.
Advantage:Can compare multiple continuous data sets easily
Disadvantage: Use only with continuous data
Pictograph:Best for comparing data that can be easily counted and represented using symbols. It is a graphic character used in picture writing.
Advantages:Easy to read, Visually appealing
Disadvantages: Hard to quantify partial icons, Icons must be of consistent size
Ratio-The quantitative relation between two amounts showing the number of times one value contains or is contained within the other. Examples: 2:4 , 3:4 , 8:12.
Example of a ratio question. -Made by me~! (Paint)
Rate- Asimilarity of two parts measured in different totals. It can also be expressed as fraction, but cannot be expressed as percent. Examples: 18.2/kg
Unite Rate question. (Question originally came from the HW booklet, but I just change the number)
Proportion-A part, share, or number considered in comparative relation to a whole.
2. As a playgroup worker, if I increase the amount of apple juice I am serving at the playgroup from 25 ml to 100 ml, how much should I increase the the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with.
