Line Plots and Scaled Graphs Flashcards

Grade 3 · Math · Flashcards

Review key vocabulary and reading strategies for line plots, bar graphs, and picture graphs.

Flashcards

Line plot: A number line with Xs or dots above values to show how often each value appears in the data.
Mode on a line plot: The value with the most Xs above it — the most common value in the data set.
Bar graph: A graph using rectangular bars of different lengths to compare data categories.
Scaled bar graph: A bar graph where each unit on the axis represents more than 1 (e.g., each unit = 5).
Reading a scaled bar graph: Look at where the bar ends, then multiply by the scale value. Bar at 7 units, scale = 10 → value = 70.
Picture graph / pictograph: A graph using images or symbols where each image represents a set number of items.
Pictograph key: Tells you what each picture symbol is worth. Always read the key first.
Reading a pictograph: Count the symbols in a row, then multiply by the key value. 4 symbols × 3 = 12.
Choosing a scale: Pick a scale (2, 5, 10) that lets all data fit neatly without making the graph too big.
Data: Collected facts or numbers. Data is organized in graphs to make it easy to compare.
Axis: The horizontal or vertical line on a graph. The scale is marked along the axis.
Why use a line plot?: To see distribution of data, spot the mode, and compare individual values quickly.