I recommend taking an analog approach.
Use paper and pencil to teach them the concepts. Use the computer as a way to demonstrate those concepts.<p>Old ipads without internet access will not provide the playground to create a wordpress site. It&#x27;s possible with external keyboard and some finaggling around but you&#x27;ll find you&#x27;re spending too much time fighting technology.<p>Use pen and paper to teach them the architecture and first principles. Use the ipads as a way for them to play with&#x2F;write html code. 
For example use web inspector tools to change a webpage on the fly and see the changes.