a_brawling_boo

What are any books/games/toys/activities/other I can help my 5-year-old how just finished preschool and will be starting kindergarten in the fall get a head start learning math and science this summer and, most importantly, have some fun while doing it?

I had a recent, lengthy, conversation with a recruiter. He said two things:

1) Microsoft dev stack is really a dead-end, any new startups or even large corporations starting new initiatives are more and more are moving away from any kind of MSF tech or Azure cloud development, and 2) no developer really wants to work with MSF tech.

I have lived in the Microsoft world my entire career, although MSF is increasingly open source/polyglot. Also, I spent a couple of years doing node.js, react, salesforce dev and integrations, Heroku, etc. I found it a breath for fresh air in some ways but lacking in others. And I have to say that I do 'like' working with C# and Azure and the rest, but I am at the point in my career, and with the market the way it is, that I could still possibly make a move and not take a major hit salary-wise, but I probably not for too longer.

For context I am approaching 40 and live in a major US city in the southeast, and I do not have an interest in going into management.