Khan Academy Wiki
Count objects 1
How-many-objects-1 256
Description
Exercise Name: Count objects 1
Math Missions: Kindergarten (U.S.) Math Mission, Early math Math Mission
Types of Problems: 2

The Count objects 1 exercise appears under the Kindergarten (U.S.) Math Mission and Early math Math Mission. This exercise helps users to practice counting groups of objects less than 20. It reinforces the idea that the stopping number when they count the number of objects in a group.

Types of problems[]

There are two types of problems that show up in this exercise:

  1. Select the last number and tell how many there are: This problem asks the user to tell what number they stopped on when they counted (multiple choice) and to enter the number of objects in a collection (free response).
    Selent

    Select the last number and tell how many there are

  2. Match the correct number to picture: This problem has three numbers between 1 and 20 and three pictures of those numbers of objects. Users are asked to match the picture of the number of objects with it's number representation.
    Ordgp

    Match the correct number to picture

Strategies[]

Basic knowledge of counting is a fundamental for doing this exercise.

  1. The first problem type has two things that need to be entered (one multiple choice and one free response) so tabbing is not very efficient. Matching problems take a fair amount of time and often the number of objects are close so it is important to count carefully which takes time. This exercise is difficult to get accuracy badges on, but it is easy to get speed badges if users can be patient.
  2. The pictures are often grouped nicely, so userss can count in groups of 2 or 5 to help users's speed slightly.

Real-life Applications[]

  1. Knowing how to count is essential for learning algebra and the higher maths, and counting is used for almost everything humans do.
  2. The whole world evolves around numbers and counting.