Picture Graphs and Bar Graphs
Aligned to 2.MD.D.10 — Common Core State Standards for Mathematics.
What this lesson teaches
Graphs show how many are in each group. A picture graph uses pictures and a bar graph uses bars. Taller bars mean more.
Worked examples
Example 1
A bar graph shows 5 dogs and 3 cats. Dogs have the taller bar. There are 5 - 3 = 2 more dogs than cats.
Example 2
In a picture graph each ball stands for one child. If soccer has 6 balls and basketball has 4, then 6 + 4 = 10 children chose those two sports.
Example 3
Bars must all start at the same line. A bar that starts higher up looks taller than it really is.
Practice questions
- A graph shows 4 red cars and 7 blue cars. How many cars in all?
- If apples have 6 and bananas have 2, how many more apples?
- In a picture graph, each picture stands for 1 fruit. What do 5 pictures mean?
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
Pictogramas y gráficas de barras
Las gráficas muestran cuántos hay en cada grupo. Un pictograma usa dibujos y una gráfica de barras usa barras. Barras más altas significan más.
Ejemplo 1: Una gráfica de barras muestra 5 perros y 3 gatos. Los perros tienen la barra más alta. Hay 5 - 3 = 2 perros más que gatos.
Ejemplo 2: En un pictograma cada pelota representa un niño. Si fútbol tiene 6 pelotas y básquetbol tiene 4, entonces 6 + 4 = 10 niños escogieron esos dos deportes.
Ejemplo 3: Todas las barras deben empezar en la misma línea. Una barra que empieza más arriba se ve más alta de lo que en realidad es.
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