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NineGaps is a fun way for students to get daily math practice, and it's a great brain workout. Use it as a daily warm-up activity, letting kids play for five minutes before instruction begins. It's also a fun homework activity for daily math skills practice in all operations. Teachers could inspire fun internal competition for kids to beat their own best times by offering some type of recognition for personal records.Continue reading Show less
NineGaps is a Sudoku-style game that allows kids to practice arithmetic in a race against time. Kids drag digits 1 through 9 to empty slots in a 3x3 grid of equations, using each number only once. The numbers must be placed so vertical and horizontal equations are all correct. Five challenge levels allow kids at multiple ability levels to play. Addition, subtraction, and multiplication are included in each level; division appears in some levels. When numbers for an equation are placed so the equation is true, chimes play. Trumpets play when an equation is incorrect. To swap numbers, drag one number on top of another and they trade places. The game's high score list shows the fastest time for each level.
NineGaps is a fast-paced, entertaining math game. Rules are simple, and multiple levels provide different levels of challenge. Kids can try to beat their previous times on each level, and as they play, they'll improve their arithmetic skills. The self-evaluation involved with trying multiple solutions transfers well to other problem-solving areas. Other than choosing a playing level, no customization -- such as choosing operations for each puzzle -- is possible. Though more helpful feedback and math tips would give kids room to learn -- not just practice -- math, NineGaps is a challenging way for kids to strengthen existing math skills.
Key Standards Supported
Operations And Algebraic Thinking
Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1
Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?.
Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.
Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.