"Dyson engineers have designed these challenges specifically for children. Ideal for home or in the classroom, they encourage inquisitive young minds to get excited about engineering."
"We have used our experience from the James Dyson Foundation schools project to develop a series of free schemes of work for all schools wanting to teach a project-led Design and Technology curriculum." https://www.jamesdysonfoundation.co.uk/resources/rethinking-design-and-technology-in-practice.html
The Challenge pages are 44 simply explained hands-on engineering projects that can be started by any one - from K-12.