I have an educational maths website - www.mathsframe.co.uk aimed at primary school children (aged 5-11). I am looking to convert my library of Flash games into HTML5 as well as adding new HTML5 games.
The activities that require remaking are fairly simple e.g. https://mathsframe.co.uk/en/resources/resource/42/sequences but I am also looking to develop more complex games similar in scope to https://mathsframe.co.uk/en/resources/resource/289/KS2-Maths-Invaders
Please have a look at my website and, if interested, send me some examples of your work - email@example.com