Games by Behrhorst Tutoring
Made for my students. Free for everyone.
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PEMDAS Multiplication Fractions Decimals & Percentss GCF & LCM Functions Geometry Other Tools
Pemdas
Haunted PEMDAS is a Halloween-themed game for practicing order of operations. Students solve spooky expressions with parentheses, exponents, multiplication, division, addition and subtraction. After every answer, the game shows each step in order. Choose Trick, Treat or Nightmare for easier or harder problems. It works on tablets, laptops and classroom screens, and sound can be turned off with one tap. No sign-up and no data collected.
Multiplication
Knowing the multiplication tables lets students move faster as math gets harder. Fractions, division, algebra and beyond all lean on these facts. Practice and memorization really do matter here.
Multiplication to the Rescue gives students quick, playful practice. Solve the problem before the two trains meet, and they swerve safely past each other. No sign-up and no data collected: each student’s name and progress are saved only on their own device.
Fractions
Fractions to the Rescue is a free fraction game for 5th graders. Students rescue animals by naming fractions, finding equivalent fractions, adding, subtracting, multiplying, dividing, and working with mixed numbers. It works on tablets, laptops, and classroom screens. No sign-up and no data collected: each student’s name and progress are saved only on their own device.
Decimals & Percents
Climb to Decimals & Percents! is a free game for 5th graders and the follow-up to Fractions to the Rescue. Emma climbs hills, ladders, and walls while her friend June fetches the decimal point. Students practice measuring with fractions, decimals, and percents, place value, multiplying and dividing by 10, 100, and 1000, and changing between all three forms. It works on tablets, laptops, and classroom screens. No sign-up and no data collected: each student’s name and progress are saved only on their own device.
GCF and LCM
Practice finding the greatest common factor (GCF) and least common multiple (LCM) the way it’s taught in class: with prime factor trees. For each number, students first decide whether it’s prime. If it isn’t, they split it into a factor pair until every branch ends in a prime. Then they write each number in exponent form and use it to find the GCF or LCM of two or three numbers. Helpful hints and a “Help me understand” section explain factors, multiples, primes and exponents along the way. Numbers go up to 144, so it pairs well with the 12 × 12 multiplication facts. No sign-up and no data collected.
Functions
Functions with the Function Machine is a set of practice games: x values go in, y values come out! Students feed the Function Machine to find outputs, work backwards to inputs, discover the rule, and decide “Is it a function?” from tables, mapping diagrams and graphs. Then they read domain and range (including graphs that go on forever), name the linear, quadratic and absolute value parent functions, and move graphs into place with a, h and k. Ready for more? The Stretch section adds square root, 1/x, exponential, log, cubic and greatest integer functions, plus holes, jumps and asymptotes. Built-in hints and a “Help me understand” section explain each idea along the way. No sign-up and no data collected.
Geometry
Shape Up for Geometry gets you ready to learn everything from points to pyramids, with Emma the corgi as your guide. Shape Up has four chapters: Lines & Angles, Triangles, Quadrilaterals and Circles. Students name points, lines and rays, plot points on a grid, and measure angles with a real-looking protractor. They feed Emma by finding matching angles, work out triangle angles and areas, figure out shapes from their clues, and find the circumference and area of circles. A built-in calculator with a π key helps with the bigger numbers. Each chapter has a Stretch section for students ready for more, like the Pythagorean theorem, parallel lines, pizza-slice sectors and negative angles. A Help me understand section explains every idea with pictures. Made for grades 5–6, but has stretch material suitable for middle and high school. No sign-up and no data collected.
OTHER TOOLS I RECOMMEND
Links to tools I often use with students.
Desmos
One of my favorite tools. A free online graphing calculator. Type in an equation and watch the graph appear, then drag sliders to see how changing numbers changes the picture. Great for exploring patterns, lines, and functions.
PhET SImulations
Another favorite: free interactive math and science simulations from the University of Colorado Boulder. Students can build circuits, explore fractions, launch projectiles, and more, all by experimenting.
Request a new game
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