If you are thinking of way to improve your child’s learning, I would suggest to buy them good dictionaries and thesauruses.
Daily, but especially when reading and when doing homework, children should have access to a good dictionary/thesaurus so to check their spellings, the meaning of tricky words in reading comprehensions and be able to find synonyms to use to enhance their writing.
Here are some ideas:
Oxford School Dictionary & Thesaurus
Oxford Children’s Thesaurus
Available on thebookpeople.co.uk
New Oxford Rhyming Dictionary 2/e (Oxford Quick Reference)
Oxford Children’s Rhyming Dictionary (Children Dictionary)
Available new or used on Amazon
Please consult this link for more fascinating ideas!