You might want to take a look at The Book of Gods or The Belief Book, both by David G. McAfee. I've read (well, skimmed...) the first and it's definitely aimed at that age range and seems like it's just what you're looking for.
>What is belief and why is it so important? Where did it come from and what does it do? This book answers all of those questions and more! David G. McAfee, an author who studies religions, teamed up with writer and illustrator Chuck Harrison to create The Belief Book. No matter how old or how young you are, this easy-to-read book can help you learn more about religions and gods and beliefs in general. It will also teach you about something called The Scientific Method, which is how we learn new things about the world! By the time you're done reading you will know the answers to some of life's biggest questions, but more importantly you will see why your questions, and all questions for that matter, are so important. This book is the first in a series of books all about belief, gods, and religion. The fully illustrated and interactive Belief Book is for readers and thinkers of all ages, including kids and kids at heart.
You might consider talking about some other religions as well, to reinforce the idea that there are MANY different beliefs about what happens after we die (reincarnation, etc). Maybe check out a good kids book on world religions from the library and look through it together. You also might take a look at "The Belief Book" by David McAfee: http://www.amazon.com/The-Belief-Book-David-McAfee/dp/1908675314/
David G McAfee has this and apparently is good for kids, and has others especially useful for shooting down MIL as she probably thinks atheism is worse than Islam from how you describe her
Having lived through similar from both sets of grandparents I cannot recommend the books by this author enough. Let them know about Christianity but also about every other religion out there .
You might want to take a look at The Book of Gods or The Belief Book, both by David G. McAfee. I've read (well, skimmed...) the first and it's definitely aimed at that age range and seems like it's just what you're looking for.
This book does a great job:
The Belief Book by McAfee & Harrison
>What is belief and why is it so important? Where did it come from and what does it do? This book answers all of those questions and more! David G. McAfee, an author who studies religions, teamed up with writer and illustrator Chuck Harrison to create The Belief Book. No matter how old or how young you are, this easy-to-read book can help you learn more about religions and gods and beliefs in general. It will also teach you about something called The Scientific Method, which is how we learn new things about the world! By the time you're done reading you will know the answers to some of life's biggest questions, but more importantly you will see why your questions, and all questions for that matter, are so important. This book is the first in a series of books all about belief, gods, and religion. The fully illustrated and interactive Belief Book is for readers and thinkers of all ages, including kids and kids at heart.
A simple search on the error page resulted with this:
https://www.amazon.com/Belief-Book-David-G-McAfee/dp/1908675314/ref=sr_1_2?ie=UTF8&qid=1542124475&sr=8-2&keywords=chuck+Harrison
Username checks out! :P
Some of the books we use:
The Kids Book of World Religions
The Belief Book
Awkward Moments (Not Found In Your Average) Children's Bible Book Series
I'm going to order the Church of Satan Activity book for this holiday season. Only $5! Thanks /u/lifebeatmyass
Some ones I can think of offhand plus a few lists:
Me & Dog
http://www.goodreads.com/list/show/41547.Atheism_and_Religious_Disbelief_in_Children_s_Fiction
http://www.csicop.org/si/show/skeptical_books_for_children_and_young_adults
http://www.atheistrepublic.com/blog/karenloethen/books-your-skeptical-children
There Are Not Monsters Under Your Bed: A Storybook for Skeptical Thinkers
Maybe Right, Maybe Wrong
It Is Ok To Be A Godless Me
Humanism, What's That?: A Book for Curious Kids
I'm An Atheist And That's Ok
Older than The Stars
Our Family Tree: An Evolution Story
Star Stuff: Carl Sagan and the Mysteries of the Cosmos
Richard Dawkins’ The Magic of Reality
The Golden Rule
The Belief Book
http://parentingbeyondbelief.com/parents/?p=384
God Is Redundant
Here are some books you may find useful:
https://www.amazon.com/Belief-Book-David-G-McAfee/dp/1908675314
https://www.amazon.com/Book-Gods-David-G-McAfee/dp/1533066760
https://www.amazon.com/Relax-Its-Just-God-Religious/dp/1941932002
https://www.amazon.com/Parenting-Beyond-Belief-Raising-Religion/dp/0814437419
https://www.amazon.com/Raising-Freethinkers-Practical-Parenting-Beyond/dp/0814410960
You might consider talking about some other religions as well, to reinforce the idea that there are MANY different beliefs about what happens after we die (reincarnation, etc). Maybe check out a good kids book on world religions from the library and look through it together. You also might take a look at "The Belief Book" by David McAfee: http://www.amazon.com/The-Belief-Book-David-McAfee/dp/1908675314/
David G McAfee has this and apparently is good for kids, and has others especially useful for shooting down MIL as she probably thinks atheism is worse than Islam from how you describe her
https://www.amazon.co.uk/Belief-Book-David-G-McAfee/dp/1908675314
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The Belief Book
http://www.amazon.com/The-Belief-Book-David-McAfee/dp/1908675314
Check this out
Having lived through similar from both sets of grandparents I cannot recommend the books by this author enough. Let them know about Christianity but also about every other religion out there .
The Belief Book https://www.amazon.com/dp/1908675314/ref=cm_sw_r_cp_api_i_Nr3ZCbSERR6QY