# 6 Best Math Websites for K-5 Learners in the US
Author: Roopesh Shenoy
Author URL: https://www.monstermath.app/blog/author/roopesh-shenoy
Published: 2026-09-07
Category: Product comparisons
Category URL: https://www.monstermath.app/blog/category/product-comparisons
Meta Description: This guide will make it easier to find the right online website for you, depending on what your child's current math need is.
Tags: math learning, math websites
Tag URLs: math learning (https://www.monstermath.app/blog/tag/math-learning), math websites (https://www.monstermath.app/blog/tag/math-websites)
URL: https://www.monstermath.app/blog/6-best-math-websites-for-k-5-learners-in-the-us

**_TL;DR:_** _There are so many digital resources for math that it can get overwhelming to find the one that suits your current needs. This guide will make it easier to find the right online website for you, depending on what your child's current math need is._

Whether your child is great at math or needs a bit of help, digital tools can augment physical manipulatives and worksheets in getting them the learning/practice they need. Especially since they can be interactive, digital tools can even do some things that physical tools can't.

However since there are so many websites and apps online, finding the ones that is right for your child for their current need can get overwhelming. We did the hard work of combing through hundreds of different websites and finding the ones that deserve your attention.

## How have we chosen these websites?

Our pedagogy experts tried most of the popular math websites, and they rated them by features, pedagogy, design, curriculum format (videos vs interactive games, for example) and engagement. Based on these factors, they picked 6 of the best math websites that kids can benefit from, as of today.

## Best for learning from videos and assessments: Khan Academy

![Khan Academy.webp](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/khan-academy-1788779574019-compressed.webp)

For kids who learn well via videos, [Khan Academy](https://www.khanacademy.org/) is a great resource. For all grades from Class 1 to Class 12, the content is quite comprehensive and very well structured. The videos - instead of being filled with flashy animations - are simple but pedagogically very sound. Assessments are designed with potential misconceptions and pitfalls in mind, so kids get a great scaffolding in each topic while getting assessed. Not to mention - it is free.

**What works well:** Content breadth, video pedagogy quality, assessments.

**What could be better:** Kids can find it a bit dull to go video -> assessment -> video in an endless cycle. Reporting is not as detailed as something like IXL.

## Best graphing and visualisation tool: Desmos

![Desmos.png](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/desmos-1788779586632-compressed.png)

[Desmos](https://www.desmos.com/) is a graphing calculator meant for quickly and seamlessly creating graphs digitally. It especially shines for simple, 2d Graphs, and algebra visualisation. Compared to Geogebra (the other graphing calculator in this list), it's much easier to get started, though it lacks some of the advanced features Geogebra has (especially when it comes to 3d geometry).

**What works well:** Optimised for quick and easy graphing. Also approved for standardised tests (SAT, AP and ACT).

**What could be better:** More features to reduce the feature gap between Desmos and Geogebra, especially for 3d.

## Best Game-based math fact fluency: Monster Math

![Monster Math.webp](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/monster-math-1788779595972-compressed.webp)

The most foundational of all skills in Math is number sense and Math fact fluency. If a child is not fluent in math facts, it's very hard for them to do better in latter math, such as algebra. And [Monster Math](https://www.monstermath.app/) does a really good job of building this math fact fluency with research-backed design.

Instead of focussing only on drills, Monster Math helps kids see what each of the operations mean - first visually using visual representations of numbers, and then transitions to abstract notations as they get familiar. This is accompanied by a lot of practice that build both conceptual understanding and mastery of math facts. All this while kids think they are playing a puzzle game.

**What works well:** Does Math fact fluency really well, in a fun game format.

**What could be better:** More detailed reporting, like IXL. Could also cover more breadth, right now designed mainly for kids in Grades 1-3, so doesn't work for kids in higher grades.

## Best for math drills: Xtra Math

![xtramath.png](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/xtramath-1788779607742-compressed.png)

We don't normally advocate drills without conceptual scaffolding, but if drills are all you are looking for, you can't go wrong with [Xtra math](https://home.xtramath.org/). The website is optimised for the most seamless drilling experience, and is also free for kids.

**What works well:** Optimised for drilling, the format looks very similar to what is seen in schools.

**What could be better:** No conceptual lessons, no visual representations, can push kids towards rote-learning. Without strong concepts, rote-learning can lead to building a fragile math foundation.

## Best for Geometry and Algebra explorer: Geogebra

![Geogebra.webp](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/geogebra-1788779619941-compressed.webp)

[Geogebra](https://www.geogebra.org/) is akin to a graphic calculator, that combines geometry, 3D math, algebra and statistics into a single platform. The platform can be useful for kids in Grades 4 onwards, especially for 2d and 3d geometry, graphing and other math topics that are related to these (such as algebra).

**What works well:** Advanced geometry, especially 3d geometry, and algebra visualisations.

**What could be better:** Not as user friendly for simpler graphing requirements, where Desmos really shines. More features, but steeper learning curve.

## Best for Digital worksheets and assessments: IXL

![IXL.webp](https://prod.superblogcdn.com/site_cuid_cm6t228tz007prqzd9vdoqb9s/images/ixl-1788779628877-compressed.webp)

[IXL](https://www.ixl.com/) is one of the most used platforms, it's also one of the [most controversial](https://www.monstermath.app/blog/ixl-reviews-from-real-users-should-you-use-it-in-2026). While parents and especially teachers love the content breadth, ability to assign homework/assignments, digital worksheet format, and loads and loads of data to make sense of where the class is - kids can show a wide variety of liking, from liking the format, to hating it especially because of the obscure "SmartScore". The content ranges from Pre-K to 12, making it very comprehensive, but also lacking in depth when it comes to concept mastery.

**What works well:** Optimised for assessments, practice, and data reporting for parents and teachers.

**What could be better:** The experience could be better, more interactive in form of visually showing and explaining concepts, as well as being more engaging for kids. SmartScore could be a little less obscure - the sudden penalty of getting something wrong when you are above 90% is very harsh and puts off a lot of kids.

## Full summary

Below is a quick reference for all the websites covered above.

Website

Best for

Grade range

Format

Cost

What works well

What could be better

**Khan Academy**

Learning from videos and assessments

1–12

Videos + assessments

Fully free

Content breadth, sound video pedagogy, assessments designed around common misconceptions

Video → assessment loop can feel dull; reporting less detailed than IXL

**Desmos**

Graphing and visualisation

Not specified

Graphing calculator

Fully free

Quick, easy 2D graphing and algebra visualisation; approved for SAT, AP and ACT

Fewer advanced features than Geogebra, especially for 3D

**Monster Math**

Game-based math fact fluency

1–3

Interactive game

Free content + paid

Builds number sense and fact fluency through visual-to-abstract progression, in a game format

More detailed reporting; limited grade breadth

**XtraMath**

Math drills

Not specified

Timed drills

Free + Paid features

Seamless drilling experience; format mirrors what kids see in school

No conceptual lessons or visual representations; can push kids toward rote learning

**Geogebra**

Geometry and algebra exploration

4+

Graphing/geometry tool

Fully free

Advanced 2D and 3D geometry, algebra visualisation

Steeper learning curve; less friendly for simple graphing

**IXL**

Digital worksheets and assessments

Pre-K–12

Digital worksheets

Free content + paid

Content breadth, assignment tools, strong data reporting for parents and teachers

Less interactive concept explanation; opaque SmartScore penalties frustrate kids

## FAQs

### Are all the websites in this list free?

All the websites mentioned here have some free content at least, with additional features/content behind a paywall. Some of the websites, such as Khan Academy, Geogebra and Desmos are fully free.

### Can we use some of these websites together?

Yes! In fact, as some of these websites really shine for specific topics, it makes sense to use them for that particular topic, and then switch to a different website when moving to a different topic. Even when using broad platforms such as Khan Academy or IXL, it makes sense to mix in best-of-breed products like Monster Math or Desmos whenever it makes sense for the child.

**Are these websites also available as apps?**

Most of them are, and allow for the same account to be used across website and app. Some, like Xtra Math, are web only.


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