Symbolab

I've just had a look at a website called Symbolab that offers a many tools for the mathematics student and even the chemistry student. I tested it out with the following rather difficult integral:

I was impressed with the step-by-step solution provided for the problem. It was quite thorough. It seems to be largely free, although there is a modestly priced paid option, and there is both an Android and iOS app that I'll download and test out. It seems a worthy competitor to WolframAlpha that doesn't offer free, step-by-step solutions on its website or apps.

I was made aware of the site thanks to Richard Byrne's tweet:

https://twitter.com/rmbyrne/status/775696157171253248

I used to follow this guy but hadn't been doing so over the past year since I retired from full-time teaching. However, I reconnected yesterday and the reconnection is already paying benefits. I've opened a free account using my Facebook login.

UPDATE: having now downloaded the Android app, I've found that the step-by-step solutions are only available with a one-off payment of $9.99 (US dollars presumably) which is a lot more than WolframAlpha is asking. The iOS app is the same except that it wants $10.99. Consequently, I've uninstalled both the Android and iOS apps and will simply use the desktop version while it still provides the steps for free. The web version is still limited in various ways. For example, the full range of practice questions on various topics is only available via a subscription. 

Creating Online Courses and Classes

moodlecloud offers a free service along with paid plans

Despite my retirement from active teaching, I remain interested in education and am engaged in intermittent mathematics tutoring. I'm always on the lookout for ways to extend the tutoring session beyond the hour or so that I spend face-to-face with my student. To this end, I've made use of moodlecloud that provides a free service as well as paid options. Having so far only one student at any given time, I've found that the free service is quite adequate. Even though only 250 MB of storage is available, I've only used a small fraction.

The free service is adequate for those with a small number of students

Of course, it means that you can't upload large video files but you can link to them and that's enough. The free option is an excellent choice for people who work with only a small number of students.

When I was teaching full-time, I used the school-based Moodle installation most of the time but I did dabble with Edmodo and I still have an account. I recently archived my old courses and even posted to the Mathematics Forum. I may begin to experiment with it again. The site has an app that enables access via smartphone or tablet, so that's useful.

My Edmodo profile

I've also been experimenting with a site called Versal, that amongst other things offers an excellent tool for rendering mathematical expressions.

An example of the rendering of mathematical expressions

Of course, there's a hundreds of similar sites out there but these are three that I am using or have used, and they are all free. While writing this I was reminded of an excellent educational blog that I used to reference but haven't done so since leaving teaching. Here is the link. 

This site offers excellent reviews of educational resources