Anyone know about the sound? Can it be turned off or used with headphones?

Ear phones are not used with this product.

Is there a way to change the darkness of the screen? Like on a calculator? The screen is very hard to read

On page 5 of the manual it said, "Turn MathShark on & press HELP during the opening screen. Use the + & - buttons to adjust contrast for maximum visibility." My contrast level is 1.

Can 1 child play alone ? must he be able to read ?

The child has to read the numbers and the plus sign, minus sign, etc. My child played with me sitting next to her, or how else would you know he or she was making progress. Parents, in my opinion have to be involved, in helping their child with math, reading, or whatever the subject is he or she is struggling with. Isn't that what parenting is all about, guiding, helping ?????????

How do I open the battery case? A normal screwdriver doesn't seem to fit.

A normal screwdriver won't fit. I use a small screwdriver that I purchased for little projects like these. (This would be like the one you can uses for towel racks hanging in wall) Hope that helps!

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🦈 Dive into math mastery with MathShark—where learning meets play!

CALCULATOR MODE BONUS - When practice is done, switch to a full-function calculator—smart learning meets practical use.
GAME IFY MATH MASTERY - Transform routine drills into an addictive electronic challenge that kids actually want to play.
ON THE GO BRAIN BOOST - Compact, battery-powered design makes it perfect for learning anywhere—from classrooms to road trips.
MULTI SKILL POWERHOUSE - Practice addition, subtraction, multiplication, division, fractions, decimals, and percentages—all in one sleek device.
ADAPTIVE LEARNING LEVELS - 8 difficulty tiers per skill keep kids engaged and growing without hitting a plateau.

Educational Insights MathShark is an electronic math game designed for kids 6 and up, featuring 7 core math skills and 8 difficulty levels each. Its compact, battery-powered design supports on-the-go learning, while interactive feedback and timed tests motivate continuous improvement. Beyond practice, it doubles as a full-function calculator, making it a versatile tool for both home and classroom.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.