This is a useful app for students who know or are learning calculus to reference formulas or theorems as they are problem solving, but parents should not expect students to learn or better understand calculus using this app. The navigation is straight-forward with a clean, easy to read layout. Each rule or theorem gets its own page displaying the rule in mathematical terms. In some cases, but not most, there is supporting text, diagrams or examples. Students who struggled understanding the concepts will not be helped by this app, but students who simply need to refresh their memories about the formulas and how to apply them may find this a helpful, easy to use reference tool. *Note: This app was originally reviewed for iPhone/iPad. Some differences might apply.

• Provides sufficient and varied types of practice problems to maximize understanding and generalization of the targeted skill/concept
• Manufacturer claims alignment with Common Core/Known Standards
• Presents educational concepts accurately
• Explains answers so students can learn from mistakes
• Better for teaching the skill to new or struggling learners
• Better for practicing or refreshing the skill
• Skills are practiced through authentic, meaningful problems (not just rote practice)

• Appropriate for a broad age range to use and enjoy
• Subject matter and problems are relevant, interesting and authentic to students
• Visually appealing to children in the target age range
• Provides virtual rewards or incentives after meeting specified goals or objectives
• Provides a "break activity" between academic problem sets
• Offers ongoing, progressive challenge
• Overall - Enjoyable. Given the option, students would choose this option

• Has a free or trial version
• Provides teaching guidance for adults to support the child and set appropriate goals
• Provides an age-appropriate tutorial/first time users can work independently
• Student should be able to use independently after first use
• Has a multi-player option to foster in-person collaboration or cooperation
• Multiple users can save a profile
• Student graduates to the next level or topic only after meeting a benchmark
• Can play without sound and not distract others
• Students can save work between sessions
• Can effectively understand and monitor student's progress (email report or in product)
• Provides options to play in languages other than English/Good for ELL
• Presents information in multiple formats (voice over, pictures and text, etc.)
• Overall - Easy to use

• Numerical Fluency