# Pearl Diver: Number Line Math

> Education

Canonical page: [https://chrome-stats.com/d/id337567843](https://chrome-stats.com/d/id337567843)

## Overview

- **ID:** `id337567843`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Learning Games Lab, NM State University
- **Category:** Education
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 4.1
- **Last updated:** 2025-03-03
- **First published:** 2009-11-05
- **Size:** 28 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/pearl-diver-number-line-math/id337567843)
- **Website:** [http://innovativemedia.nmsu.edu](http://innovativemedia.nmsu.edu/)
- **Privacy policy:** [https://nmsu.edu/privacy/](https://nmsu.edu/privacy/)

## 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: http://mathsnacks.com/research.html

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 http://mathsnacks.org.

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).

## Rankings

- #631,975 — Overall

## Review summary

Pearl Diver is praised as an effective, kid-friendly math tool focused on the number line, fractions, and negative numbers, with appealing visuals. It’s often cited as educational, fun, and suitable for homeschooling, and many users appreciate that it’s free. Common drawbacks center on depth and progression: reviewers want more levels and the ability to adjust difficulty, and some feel the game isn’t particularly deep or challenging. Overall, it’s a visually pleasing, accessible math practice game with room to expand content.

### Pros

- Educational value focusing on the number line, fractions, and negative numbers helps kids practice core concepts.
- Fun and engaging for kids; described as a good math-based diversion and suitable for homeschooling.
- Beautiful graphics and strong production values; looks fantastic.
- Free or high value for money; many reviewers call it the best free math game and great for homeschooling.

### Cons

- Limited depth and lack of adjustable difficulty; players want more levels and customization.
- Progression can feel too fast or not challenging for some users; desire for more levels and control over difficulty.
- Not all reviews see it as a deep or lasting gaming experience.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id337567843)