---
title: "Pearl Diver: Number Line Math - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Throw on your diving helmet, and head into the depths of the sea!  Master the number line, including fractions and decimals, while gathering beautiful pearls. Will you find the elusive black pearl?  •"
---

# Pearl Diver: Number Line Math — United States

![Pearl Diver App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/69/61/a7/6961a7cd-1333-0e96-136e-b920e0f3de9c/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [New Mexico State University Board of Regents](https://apptail.io/developer/new-mexico-state-university-board-of-regents-psb)
**Category:** Education
**Rating:** 5.0/5 (2 ratings)
**Price:** Free
**Bundle ID:** edu.nmsu.pearldiver
**Store:** Apple App Store
**Country:** United States
**Version:** 4.1 (released 2025-03-03)
**Original Release:** 2009-11-05
**Languages:** English, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id337567843)
**AppTail Page:** [https://apptail.io/app/pearl-diver-number-line-math-tCQe/united-states](https://apptail.io/app/pearl-diver-number-line-math-tCQe/united-states)

## Pearl Diver Description
Throw on your diving helmet, and head into the depths of the sea!  Master the number line, including fractions and decimals, while gathering beautiful pearls. Will you find the elusive black pearl?

• Ideal for elementary and middle school students, grades 3-8.

Developed by mathematics educators, researchers, and game developers at the Learning Games Lab at New Mexico State University.  Games developed by the Learning Games Lab undergo a rigorous instructional design process, extensive user testing, and input from learners, teachers, and researchers.  

Pearl Diver addresses Common Core standards relevant to the number line and properties of numbers, including:
  •  Understanding numbers, ways of representing numbers, and number systems.
 • Understanding and representing commonly used fractions.
 •  Understanding fractions as part of unit wholes and as locations on number lines.
 •  Comparing and ordering fractions, and finding their approximate locations on the number line.

Read about research documenting learning effectiveness of Math Snacks: 

Pearl Diver was developed as part of the "Math Snacks" initiative.  Other free animations, activities, and games are available through the Math Snacks web site at 

Math Snack materials were developed with support from the National Science Foundation (0918794 & 1503507). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Some materials were originally prototyped or discussed as part of a cooperative agreement from the U.S. Department of Education (U295A050004).

## Pearl Diver Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/d6/91/aa/d691aa82-11e0-1d9a-2f92-d211e0088568/pr_source.jpg/960x640.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/a5/35/59/a53559ce-286c-5bcb-9203-8a152f3fd80a/pr_source.jpg/960x640.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/12/65/dc/1265dc23-6a50-91d9-c452-ae501f2b1ae1/pr_source.jpg/960x640.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/b7/8a/be/b78abe95-46f0-a9d2-0272-afeec974a7f5/pr_source.jpg/960x640.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/53/36/75/533675b7-370b-cfc3-7532-f4f4fd53fece/pr_source.jpg/960x640.png)

## Pearl Diver Rating Breakdown in United States
- 5 stars: 2 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Pearl Diver Reviews in United States

### *---- "Black screen on iphone5"
With music and some obscure graphics on the side - please fix!!!
-- 158//Casey\\851, 2015-11-06

### ***** "Learning the Number Line"
My 6-year-old enjoys the first few levels of this game and has played it many times. The later levels with fractions and negative numbers are pretty fun too. Definitely can see how it would help kids practice the number line.
-- E3333333, 2014-07-03

### ***** "Great"
This is a great game why is there no comments.
-- Rachel The Second, 2014-05-19

[View all Pearl Diver reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)



## Pearl Diver Discovered Keywords
- elementary math
- number line math

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## Pearl Diver Available In
- [United Kingdom](https://apptail.io/app/pearl-diver-number-line-math-tCQe/united-kingdom)
- [Australia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/australia)
- [Canada](https://apptail.io/app/pearl-diver-number-line-math-tCQe/canada)
- [Netherlands](https://apptail.io/app/pearl-diver-number-line-math-tCQe/netherlands)
- [Singapore](https://apptail.io/app/pearl-diver-number-line-math-tCQe/singapore)
- [Japan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/japan)
- [Philippines](https://apptail.io/app/pearl-diver-number-line-math-tCQe/philippines)
- [India](https://apptail.io/app/pearl-diver-number-line-math-tCQe/india)
- [United States](https://apptail.io/app/pearl-diver-number-line-math-tCQe/united-states)
- [Sweden](https://apptail.io/app/pearl-diver-number-line-math-tCQe/sweden)
- [Belgium](https://apptail.io/app/pearl-diver-number-line-math-tCQe/belgium)
- [South Korea](https://apptail.io/app/pearl-diver-number-line-math-tCQe/south-korea)
- [Kuwait](https://apptail.io/app/pearl-diver-number-line-math-tCQe/kuwait)
- [France](https://apptail.io/app/pearl-diver-number-line-math-tCQe/france)
- [Hong Kong SAR China](https://apptail.io/app/pearl-diver-number-line-math-tCQe/hong-kong)
- [Switzerland](https://apptail.io/app/pearl-diver-number-line-math-tCQe/switzerland)
- [Hungary](https://apptail.io/app/pearl-diver-number-line-math-tCQe/hungary)
- [United Arab Emirates](https://apptail.io/app/pearl-diver-number-line-math-tCQe/united-arab-emirates)
- [Norway](https://apptail.io/app/pearl-diver-number-line-math-tCQe/norway)
- [Germany](https://apptail.io/app/pearl-diver-number-line-math-tCQe/germany)
- [New Zealand](https://apptail.io/app/pearl-diver-number-line-math-tCQe/new-zealand)
- [Israel](https://apptail.io/app/pearl-diver-number-line-math-tCQe/israel)
- [Denmark](https://apptail.io/app/pearl-diver-number-line-math-tCQe/denmark)
- [Italy](https://apptail.io/app/pearl-diver-number-line-math-tCQe/italy)
- [Russia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/russia)
- [Saudi Arabia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/saudi-arabia)
- [Kazakhstan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/kazakhstan)
- [Lebanon](https://apptail.io/app/pearl-diver-number-line-math-tCQe/lebanon)
- [Lithuania](https://apptail.io/app/pearl-diver-number-line-math-tCQe/lithuania)
- [Luxembourg](https://apptail.io/app/pearl-diver-number-line-math-tCQe/luxembourg)
- [Mexico](https://apptail.io/app/pearl-diver-number-line-math-tCQe/mexico)
- [Malaysia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/malaysia)
- [Nigeria](https://apptail.io/app/pearl-diver-number-line-math-tCQe/nigeria)
- [Nepal](https://apptail.io/app/pearl-diver-number-line-math-tCQe/nepal)
- [Peru](https://apptail.io/app/pearl-diver-number-line-math-tCQe/peru)
- [Pakistan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/pakistan)
- [Poland](https://apptail.io/app/pearl-diver-number-line-math-tCQe/poland)
- [Portugal](https://apptail.io/app/pearl-diver-number-line-math-tCQe/portugal)
- [Romania](https://apptail.io/app/pearl-diver-number-line-math-tCQe/romania)
- [Slovenia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/slovenia)
- [Thailand](https://apptail.io/app/pearl-diver-number-line-math-tCQe/thailand)
- [Tunisia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/tunisia)
- [Türkiye](https://apptail.io/app/pearl-diver-number-line-math-tCQe/turkey)
- [Taiwan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/taiwan)
- [Ukraine](https://apptail.io/app/pearl-diver-number-line-math-tCQe/ukraine)
- [Uzbekistan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/uzbekistan)
- [Vietnam](https://apptail.io/app/pearl-diver-number-line-math-tCQe/vietnam)
- [South Africa](https://apptail.io/app/pearl-diver-number-line-math-tCQe/south-africa)
- [Argentina](https://apptail.io/app/pearl-diver-number-line-math-tCQe/argentina)
- [Austria](https://apptail.io/app/pearl-diver-number-line-math-tCQe/austria)
- [Azerbaijan](https://apptail.io/app/pearl-diver-number-line-math-tCQe/azerbaijan)
- [Bulgaria](https://apptail.io/app/pearl-diver-number-line-math-tCQe/bulgaria)
- [Brunei](https://apptail.io/app/pearl-diver-number-line-math-tCQe/brunei)
- [Brazil](https://apptail.io/app/pearl-diver-number-line-math-tCQe/brazil)
- [Belarus](https://apptail.io/app/pearl-diver-number-line-math-tCQe/belarus)
- [Chile](https://apptail.io/app/pearl-diver-number-line-math-tCQe/chile)
- [China](https://apptail.io/app/pearl-diver-number-line-math-tCQe/china)
- [Colombia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/colombia)
- [Cyprus](https://apptail.io/app/pearl-diver-number-line-math-tCQe/cyprus)
- [Czechia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/czechia)
- [Dominican Republic](https://apptail.io/app/pearl-diver-number-line-math-tCQe/dominican-republic)
- [Algeria](https://apptail.io/app/pearl-diver-number-line-math-tCQe/algeria)
- [Ecuador](https://apptail.io/app/pearl-diver-number-line-math-tCQe/ecuador)
- [Estonia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/estonia)
- [Egypt](https://apptail.io/app/pearl-diver-number-line-math-tCQe/egypt)
- [Spain](https://apptail.io/app/pearl-diver-number-line-math-tCQe/spain)
- [Finland](https://apptail.io/app/pearl-diver-number-line-math-tCQe/finland)
- [Greece](https://apptail.io/app/pearl-diver-number-line-math-tCQe/greece)
- [Croatia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/croatia)
- [Indonesia](https://apptail.io/app/pearl-diver-number-line-math-tCQe/indonesia)
- [Ireland](https://apptail.io/app/pearl-diver-number-line-math-tCQe/ireland)
- [Iceland](https://apptail.io/app/pearl-diver-number-line-math-tCQe/iceland)
- [Kenya](https://apptail.io/app/pearl-diver-number-line-math-tCQe/kenya)

---

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