Counting Objects Using Arrays

This video tutorial teaches how to count objects efficiently using arrays and skip counting. It begins by explaining skip counting, which involves counting by numbers other than one, using examples like counting chicken legs in pairs. The concept of arrays is introduced as an orderly arrangement of objects in rows and columns, making counting easier. The video also highlights that not all numbers can form arrays, using the example of 11 tiles. Finally, it demonstrates how to use arrays and skip counting together for faster counting, supported by repeated addition sentences.

What is skip counting?

• Counting by ones

• Counting by numbers other than one

• Counting in random order

• Counting backwards

How many chicken legs are there if you count by twos and reach 12?

• 6

• 12

• 24

• 18

What is an array?

• A random arrangement of objects

• A circular arrangement of objects

• An arrangement of objects into rows and columns

• A single line of objects

Why can't the number 11 be made into an array?

• It is a prime number

• It is too small

• It is an odd number

• It cannot be evenly divided into rows and columns

What is repeated addition?

• Multiplying numbers repeatedly

• Adding the same number multiple times

• Adding different numbers together

• Subtracting numbers repeatedly