Answer to Question 1
Universal design for learning is accomplished by means of flexible curriculum materials and activities that offer alternatives to pupils with widely varying abilities and backgrounds.
Answer to Question 2
Low-tech devices are those that incorporate low-cost materials and do not require batteries or electrical power. Mid-tech devices are a bit more sophisticated and require an electrical source or are viewed as more complex to operate. Lastly, high-tech devices are more complicated and generally expensive to own and operate.
Observational learning in octopuses
Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
Fiona Rae, I'm Learning to Fly!!
Nursing: A Concept-Based Approach to Learning, Volume I
Education is not the learning of facts, but the training of minds to think
Observational Learning