New multilingual website applicaction for Kindergarten to Elementary School. Focus Learning Basic Math Skills -- Project 3

IMPORTANT: Please read, complete post and review attachments before making your bid. Hi, I have a project consisting of a website focused on students from Kindergarten to Elementary School. The goal is for them to be able to learn basic math skills, like addition, multiplication, division, fractions, etc. It is going to be a multilingual site. Already have a barely working initial demo website. It is coded in procedural PHP, and database to store info will be MySQL. Need to convert part of what I have to OOP PHP, and this would be more of collaboration, where an OOP PHP programmer takes the lead, and I will follow along. This is an hourly project; maximum hourly bid I can accept is between $3.00 and $5.00 USD, 20 hours max per week. Let me know if you need more details. Prompt and reliable communication is essential. Trust is very important for this project to succeed. Freelancer is required to sign a "Non-disclosure Agreement to keep all project files and details discussed through private messages confidential". Freelancer is required to delete all project files in his possession at the conclusion of this hourly project. Also, Freelancer will be required to sign an Intellectual Property (IP) Agreement.