Angle Tool
Interactive angle tool — explore acute, right, obtuse angles.
Jackson Smirnov
Teaching on iarepo since May 2026 553 published resources opened 7,735 times
Published resources
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Protractor
Virtual protractor — measure and draw angles.
Pattern Blocks
Pattern blocks — tessellations, symmetry, area.
Tangram
Classic tangram puzzle — build shapes from 7 pieces.
Geoboard
Virtual geoboard — create shapes with rubber bands on a peg grid.
Percentage Strips
Percentage strips — fractions, decimals, and percents.
Decimal Strips
Decimal strips — connect fractions to decimals.
Equivalent Fractions (Bars)
Find equivalent fractions using bar models.
Equivalent Fractions (Circles)
Find equivalent fractions using circle models.
Fraction Circles
Fraction circles — visualize parts of a whole.
Fraction Strips
Fraction strips for comparing and ordering fractions.
Fraction Bars
Interactive fraction bars — compare, add, subtract fractions visually.
Polypad: Patio de Juegos Matemático
Los mejores manipulativos virtuales del mundo — polígonos, fracciones, álgebra tiles, números, geometría, probabilidad y más. Herramienta todo-en-uno.
Desmos: Matrix Calculator
Matrix operations: multiplication, determinants, eigenvalues, inverses.
Desmos: Scientific Calculator
Free scientific calculator with history and variable storage.
GeoGebra: Spreadsheet
Spreadsheet with charts and statistical analysis tools.
GeoGebra: Geometry
Dynamic geometry — constructions, transformations, and proofs.
GeoGebra: Graphing Calculator
Free online graphing calculator — plot functions, create sliders, animate.
Meiosis (UNAM)
Fases de la meiosis y variabilidad genética.
Mitosis (UNAM)
Fases de la mitosis con animaciones interactivas.
Célula Vegetal (UNAM)
Estructura de la célula vegetal — cloroplastos, pared celular, vacuola.
Célula Animal (UNAM)
Estructura y orgánulos de la célula animal interactiva.
PraxiLabs: Virtual Science Labs
Collection of 3D virtual labs for biology, chemistry, and physics. Realistic lab simulations.
Body Systems Game
Learn about human body organ systems interactively.