I was lucky as this isn't every child's experience.
My page on education in Tanzania highlights this, and how being unable to pay for secondary school fees can leave pupils there at a disadvantage on the job market when they reach it.
I remember Dad used to sit with me and help with homework. I was never a "scientist" or "mathematician" and loved getting the extra help.
The Ifakara Bakery Project Charity helped establish the Valenova Foundation in Tanzania, and a basic computer room. Sebald, who runs the Foundation, told me that those who have progressed further with their studies help the younger ones, and the computer room is much appreciated. (That's after the electricity supply was installed!)www.valenovafoundation.com
For those less fortunate, of which there are many, they hope to receive a place in one of the Charity's kindergartens or be able to attend secondary school via sponsorship. (Details of how you can help are on my Tanzania page.)