> ## Documentation Index
> Fetch the complete documentation index at: https://edzo.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Number Chart Block

> Learn how to use Number Chart blocks to create configurable number grids for teaching patterns, counting, and number sense.

The **Number Chart** block creates a customizable number grid (like a hundreds chart) with options for hidden cells, highlighted cells, and custom coloring. Use it to explore number patterns, skip counting, and place value.

This is a display block for teaching and demonstration. Learners can view the chart but aren't assessed on it.

> [!NOTE]
>
> For assessable activities where learners fill in missing numbers or identify patterns, use the [Number Chart Question](https://edzo.mintlify.site/creating/resources/question-blocks/number-chart-question.md) block instead.

## When to use Number Chart blocks

Number Chart blocks work well for:

* Displaying a hundreds chart (or any number range)
* Highlighting skip counting patterns (2s, 5s, 10s)
* Showing odd and even number patterns
* Hiding specific numbers for discussion and prediction
* Teaching place value and number relationships
* Exploring number sequences with custom step values

## Settings

### Chart settings

**Rows** `slider` (default: 10)

The number of rows in the chart (1 to 20).

**Columns** `slider` (default: 10)

The number of columns in the chart (1 to 20).

**Start number** `input` (default: 1)

The first number in the chart sequence.

**Step** `input` (default: 1)

The increment between consecutive numbers (-50 to 50). Use negative values for countdown charts.

**Direction** `select` (default: Left to right)

The order in which numbers flow through the grid:

* **Left to right**: Numbers read left to right on every row
* **Snake**: Numbers alternate direction on each row (left-right, then right-left)

### Display settings

**Cell size** `select` (default: Medium)

The size of each cell in the chart:

* **Small**: Compact cells
* **Medium**: Standard cells
* **Large**: Larger cells for younger learners

### Cell customization

You can customize individual cells by:

* **Hiding cells**: Make specific numbers invisible for prediction activities
* **Highlighting cells**: Add a highlight color to draw attention to specific numbers
* **Coloring cells**: Apply custom colors to individual cells to show patterns

## Tips for teachers and parents

**Best practices:**

* Use a standard 10x10 grid starting at 1 for a classic hundreds chart
* Highlight multiples of a number (e.g., every 3rd cell) to show skip counting patterns
* Hide cells to create prediction activities ("What number should go here?")
* Change the start number and step to create charts for different number ranges
* Use **Snake** direction for number line-style displays
* Try a 1x10 grid for a simple number line layout
* Color-code groups of numbers to show patterns like odd/even

## Related blocks

* [Number Chart Question](https://edzo.mintlify.site/creating/resources/question-blocks/number-chart-question.md): Assessable version where learners fill in missing numbers or identify patterns
* [Number Line](https://edzo.mintlify.site/creating/resources/learning-blocks/number-line.md): For linear number displays
* [Number Frame](https://edzo.mintlify.site/creating/resources/learning-blocks/number-frame.md): For ten-frame and twenty-frame displays


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