required (hard)helpful (soft)NumberComputational FluencyPatterns & AlgebraGeometry & MeasurementData & ProbabilityCalculusComputer ScienceFinancial LiteracyLife ScienceChemistryPhysicsEarth & Space ScienceEnvironmental ScienceScience PracticesPhonics & FoundationsReading & ComprehendingVocabulary & Word StudyGrammar & ConventionsWriting & CreatingLiterature & AnalysisOral & Spoken Language
TargetRelationships between area and perimeterG5
Area of squares and rectanglesG5
↳ Shortcuts for regular shapes and rectanglesPerimeter of regular and irregular shapesG4Lesson
↳ Measuring sides and using unitsPerimeter of regular and irregular shapesG4Lesson
↳ Naming polygons by their sidesRegular and irregular polygonsG4Lesson
↳ Multiplying two or three digits by one digitMultiplication and division of multi-digit by one-digit numbersG4Lesson
↳ Perimeter is the distance aroundPerimeter of regular and irregular shapesG4Lesson
↳ Is it a polygon?Regular and irregular polygonsG4Lesson
↳ Breaking a number apart to multiplyMultiplication and division of multi-digit by one-digit numbersG4Lesson
Perimeter of regular and irregular shapesG4
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
learn the items on the left, then this · hover a card to trace its chain · click a lessoned card to open it