Agree with Kro13: It's a really nice Pitch Deck!
Can't find your Twitter profile. Definitely worth setting up if you don't have one, it's free and takes about 2 minutes.
If you have Twitter, please link your #PitchYaPitch tweet in the comments and/or hit "Edit this submission" and paste the link.
With the short pitch itself, we'd recommend a more engaging hook. "3D Math Practice for Kids 4–10" describes technically what it is.
Maybe something like: "Your kids will have fun learning Math with this free and engaging game. Perfect for ages 4-10."