Thus you feel like you did your task but unable to explain anything when asked by another person or whenever required. Constructivism deals with connecting new ideas with old ideas. Thus, one must constructs new understanding by adopting new thoughts with prior learning or experiences. Rather than memorizing scattered facts, try to relate them to prior knowledge. Think about any new idea and find out comparisons to other thoughts you know. Think about similar thoughts you learned in your past. Draw connections between old and new information.
Adopting these kinds of techniques will allows you to see the bright picture of the side and you will not get swamped with new thoughts coming to your mind. Identify important points. Think about how these best take their place with what you know from your experiences. Make information memorable Repetition, Repetition, Repetition, Repetition, Repetition, Repetition, Repetition Read it, Write it, Say it, Explain it, Draw it, Ask questions about it..... Break down sentences by using prefix or suffix. Apply different memory techniques. Make silly rhymes or sayings to remember numbers or lists. Use analogies pattern to learn examples. Humour is a powerful memory tool use it to dumber the better.
Study in Short and in short intervals of time/sessions. It has been proven that short duration of concentration repeated frequently are much more efficient than one long session. So, even if you only have 30 minutes, go for it then take a break. Then study another 30 minutes. This distributed learning techniques will be highly efficient because it made the way the brain likes to work. The brain needs backup and recharging time for protein synthesis. The rest periods are when your brain assimilates your effort. They are a powerful tool which many teachers do not apply to their students."