🎨 Creative Projects for K-12

199 hands-on math lesson plans — click any title to open the full lesson directly.

Showing 199 of 199 lessons

11869 MIT Admissions Test Problem2"3N+1" Problem3A Basket Full of EggsPDF4A "Cut and Paste" Geometric Proof of the Pythagorean Theorem5A Problem for Young and Old Learners6A problem from the Russian Math Olympiad7A proof of the Pythagorean theorem using similar triangles8A puzzle with the integers one through sixteen9A puzzle with 108910A "String Design" that We Can Draw: A Rhombus Inside a Hexagon11A Three-Sided Cat for You to Draw12A Traveler on a 6 by 6 Grid13Addition Board14Addition in kindergarten and first grade15An arithmetical prodigy from 189916An old merchant and his four childrenPDF17Ancient Knot18Animations on the TI19Angles of a Triangle: A Geometric Property through Paper Folding20Areas and Borders21Area & Perimeter22Arithmetic With ManipulativesPDF23Average test grade24Ball in a Box25Banana26Barrels, Casks and Other Curvy Containers27Big numbers AKA Grains of rice on a chess board28Block houses29Building a scale-model doghouse30Building a Skeletal Box according to Specifications31Candles32Candy Baskets33Capacity34Chambered Nautilus35Checking if a number is a prime number36Chinese Calendar Box37Chords in a circle38Circle, Square, and Triangle39Circles and Young LearnersPDF40Clocks and Time41Coins42Coloring lines in a hexagon43Colorful Triangles44Congruent Triangles45Counting46Counting board for young learners47Counting to 10048Creasing Paper Along Curves49Cubes50Cube with One Edge Sliced Off51Cuisinaire StripsPDF52Cutting a rectangle53Cutting a triangle54Cutting a triangle into two pieces of equal area and equal perimeter55Cutting an equilateral triangle56Cutting Polyhedra57Cylinder and Cone with the Same Heights and Base Diameters58Deriving the formula for the area of a trianglePDF59Diagonal of a Square60Dividing a square61Division with remainder on the TI-108: Two examples62Dogs, Cats, and Mice63Dot-to-Dot64Doubling and halving65Drawing a rectangle66Drawing a simple figure from verbal instructions67Drawing Triangles68Easy Squares69Egg Dilemma (Part 1)70Exponentiation71Factoring72Fancy Envelopes73Finding a fraction between two fractions74Five-pointed 3D Star75Flipping coins76Folded Paper Flower With Six Petals77Four Bugs78Four Cards79Four Cubes80Fractions of a circle AKA CaterpillarPDF81From One Billion to Zero82From one to one trillionPDF83Game of Circles and Stars84Game of tens85Giant Enchilada86Halloween Hat87Heads or tails?88Hexagonal Puzzle89Holiday Ornament90Horse For Sale91How Does a Calculator Compute The Square Root Of a Number?92How many pentominoes?93How Many Squares are on a Chess Board?94How Many Triangles? (Parts 1 and 2)95How Many Triangles In This Triangle?96How to measure an angle without a protractor97How to Measure the Value of PiPDF98How to transform a rectangle to a different rectangle99Hyperbolas & Ellipses100I Can Guess Your Age!101I Can Guess Your Age and House Number!102Impossible Object103Inscribed Triangle104Interest105Introduction to Measurement (First Grade)106Irregular Polygons107Julekurv AKA Valentine BasketPDF108Jump: A game of Solitaire with Ten Tokens109Kites110Lattice MultiplicationPDF111Leaky Roof112Long-eared critters113Magic Beans114Magic Folding Cube115Magic Square116Making Animals by Cutting Polygon Puzzles117Making Blocks From Four Cubes118Making Boxes119Making an Involute120Maze121Mini Slot Machine122Moons123More dot-to-dot tasks124More old word problems125Multiplications "Done according to Adam Ries"126Nathan tosses a coin 20 times127Number Game with Dice128Number Puzzle129Old Shepherd's Will130Olympic Rings131One ThirdPDF132Painting houses (and Other Work Problems)133Paradox of averages134Partitioning A Square135Pentagon Puzzles136Phone number algebra137Piggybank138Playing with shapes139Poor Peppermint PattyPDF140Powerball 55141Pretty Gift Box142Prime Numbers: The Sieve of Eratosthenes143Properties Of A Box144Puffy StarsPDF145Pumpkins146Puzzle with pebbles147Pyramid into fourths148Pyramid of Cubes149Pyramid of Marbles150Quadrilaterals151RectanglesPDF152Regular Polygons with Equal Areas153Related problems154Right triangle155Sequences of composite numbers: A contest156Shapes of numbers157Shapes of numbers using triangles158Sharing Bread159Sheep: An Old Puzzle160Shoe salePDF161Six Pyramids162Sixteen Square Inches163Solomon's Seal164Sorting game165Spiral (grades K-4)166Spiral (grades 5-8)167The Spiral of Theodorus on the TI-83/84 Calculator168Square and cubic units169Square in a Triangle170Straw Polyhedra171Subtraction Algorithm172Subtraction with Counters173Sum of All 100 Numbers in the Multiplication TablePDF174Sum of the First N Whole Numbers175Sums of two squares176Survivor on a Hexagonal Island177Tatami178Tea Boxes179Temperature Conversions180Tessellating a Circle181The ladder and box problem182"The Laughing Cow" Cheese Wedge Containers183The Practical Value of Proofs184The Zuni Rainbird185Three fourths186Three-Piece Circle Puzzle187Tossing One Die188Triangle to square: A hinged dissection189Turning a rectangle into a square by dissection190Twelve easy pieces191Twenty-four Cubes192Two Old Problems193Two Shepherd Brothers194Understanding Long Division195Unusual Containers196What next?197What rectangle is this?198Yin Yang (two part)PDF199Yin Yang (three part)