Decomposing Numbers and Expanded Form

This video by Susan Jones introduces four engaging methods to teach students how to decompose numbers, a crucial skill in developing number sense. The video covers hands-on activities, games, and advanced techniques suitable for different grade levels, providing teachers with practical tools and free resources to enhance their math lessons.

Why is decomposing numbers an important skill for students to learn?

• It develops their number sense.

• It is a skill used in geometry.

• It helps them understand multiplication.

• It is only useful for subtraction.

What is the main benefit of using hands-on activities to teach decomposing numbers?

• It requires no preparation.

• It is only suitable for older students.

• It allows students to physically manipulate numbers.

• It makes the lesson longer.

In the 'Magic Bag' activity, what do students do with the cubes?

• They use them to build a tower.

• They throw them on the floor.

• They sort them by color and create a cube train.

• They count them silently.

What is the purpose of the 'Shake and Spill' activity?

• To learn about shapes.

• To help students see different combinations of a number.

• To teach students how to add numbers.

• To practice subtraction.

In the 'Roll a Bond' game, what do students need to do?

• Roll dice and write down the numbers.

• Roll dice and solve for the missing part of a number bond.

• Roll dice and add the numbers together.

• Roll dice and subtract the numbers.

What is the goal of using quick images or dot cards in math lessons?

• To improve students' handwriting.

• To make students memorize numbers.

• To help students visualize different ways to make a number.

• To teach students about colors.

How can quick images help students in the future?

• By providing a reference for different ways to make numbers.

• By teaching them to count backwards.

• By making them faster at addition.

• By improving their drawing skills.

What is the expanded form of the number 324?

• 300 + 20 + 4

• 3240

• 32 + 4

• 3 + 24

Why is expanded form useful for second-grade students?

• It helps them with multiplication.

• It allows them to decompose larger numbers.

• It is only used in art class.

• It is not useful for second-grade students.

What tools are suggested for teaching expanded form?

• Base 10 blocks and place value mats.

• Rulers and protractors.

• Paint and brushes.

• Scissors and glue.