## What is the example of number discs?

For example, in the number 6,142, the digit 6 is represented by six thousands disks, the digit 1 is represented by one hundreds disk, the digit 4 is represented by four tens disks, and the digit 2 is represented by two ones disks.

### What are disks in math?

In geometry, a disk (also spelled disc) is the region in a plane bounded by a circle. A disk is said to be closed if it contains the circle that constitutes its boundary, and open if it does not.

**What shape is a disc?**

A disk is a round, flat circle. The face of the clock on your kitchen wall is a disk. Disk, also spelled disc, refers to anything with a circular flat shape, like a Frisbee, a penny, or a dinner plate.

**Is a CD a disk or disc?**

For example, in the case of flat, rotational data storage media the convention is that the spelling disk is used for magnetic storage (e.g. hard disks) while disc is used for optical storage (e.g. compact discs, better known as CDs). …

## How are number discs used to teach place value?

Number disks also provide students with a better understanding of expanded form of numbers because expanded form is based on place value. Many students do not understand expanded form because they do not understand that the value of the digit is either 10 times less than the digit before it or ten times more that the digit after it.

### How are number discs used to teach expanded form?

Many students do not understand expanded form because they do not understand that the value of the digit is either 10 times less than the digit before it or ten times more that the digit after it. These concepts become more clear when teachers use number disks instead of base ten blocks.

**How is place value taught in the Common Core?**

With the implementation of the math Common Core Standards there have been a numerous changes in the choice of manipulatives that are used to teach the age old concept, place value. In second and fourth grades place value is major topic that is taught to students in these grades.

**How many objects are on a place value disk?**

These place value disks (sometimes called place value chips) are circular objects that each represent 1, 10, 100, or 1,000.