Count and Compare A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Guided Mathematics Number Compare (HTML5)
My mystery number A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Demo
Guided		 Mathematics Number Play (HTML5)
True or False? 1st grade A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Dom Carorora, Azar Kamaldar, Ian Whitacre K-5 Guided Mathematics Number Compare (HTML5)
Ten and how many more? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Guided Mathematics Number Play (HTML5)
Organize it! A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Dom Carorora, Azar Kamaldar, Ian Whitacre K-5 Guided Mathematics Number Play (HTML5)
Addition strategies within 10 (or 20) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Guided Mathematics Number Play (HTML5)
Subtraction stories A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Guided Mathematics Number Play (HTML5)
What is greater and less? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Azar Kamaldar, Dom Carorora, Ian Whitacre K-5 Guided
Demo		 Mathematics Make a Ten (HTML5)
Drag and count A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Azar Kamaldar, Dom Carorora, Ian Whitacre K-5 Guided Mathematics Number Play (HTML5)
Family of Mr. 10 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Azar Kamaldar, Dom Carorora, Ian Whitacre K-5 Guided Mathematics Number Play (HTML5)
Comparing numbers using a vertical number line A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Demo
Guided		 Mathematics Number Compare (HTML5)
True or False? Kindergarten A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Dom Carorora, Azar Kamaldar, Ian Whitacre K-5 Guided Mathematics Number Compare (HTML5)
Choral counting A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Demo Mathematics Make a Ten (HTML5)
Choral Counting A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Dom Carorora, Azar Kamaldar K-5 Guided Mathematics Make a Ten (HTML5)
What is a Fraction? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Anonymous K-5 Guided Mathematics Fractions: Intro (HTML5)
 Fractions Intro
Balancing Act Remote Lab A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein K-5
UG-Intro
HS
MS		 Lab
Remote
HW		 Mathematics
Physics		 Balancing Act (HTML5)
Arithmetic Games (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein K-5
HS
MS		 HW
Lab
Remote		 Mathematics Arithmetic (HTML5)
Patterns and Ratios A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ian Whitacre, Sebnem Tekin MS
K-5		 Guided Mathematics Proportion Playground (HTML5)
Fraction Matcher Game A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein MS
K-5
HS		 HW
Lab		 Mathematics Fraction Matcher (HTML5)
 Fraction Matcher
Comparing and Ordering Fractins Day 2 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson K-5 Guided Mathematics Fractions: Intro (HTML5)
 Fractions Intro
What is a Fraction? Day 1 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson K-5 Guided Mathematics Fractions: Intro (HTML5)
 Fractions Intro
Building Fraction Sense Using “Fractions Intro PhET Simulation” A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Philippe Guegan MS
K-5		 Guided
Discuss		 Mathematics Fractions: Intro (HTML5)
 Fractions: Mixed Numbers (HTML5)
Equivalent Fractions Day 3 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson K-5 Guided Mathematics Build a Fraction (HTML5)
 Build a Fraction
 Fractions: Intro (HTML5)
 Fractions Intro
Fractions 3 Day Unit A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson K-5 Guided Mathematics Build a Fraction (HTML5)
 Build a Fraction
 Fractions: Intro (HTML5)
 Fractions Intro
Beaded Factors A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Heather Politi K-5
MS		 Guided Mathematics Proportion Playground (HTML5)
Fraction Matcher Scaffolding Lesson A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Julie Litt and AnnMarie Fore K-5
MS		 Guided Mathematics Fraction Matcher (HTML5)
Exploring Equivalence with Rational Numbers: Part 2 Extending to Mixed Numbers A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Michael Matassa MS
K-5		 Discuss
Lab
Guided		 Mathematics Fraction Matcher (HTML5)
 Fraction Matcher
Exploring Equivalence with Rational Numbers: Part 1 Fractions less than or equal to 1 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Michael Matassa MS
K-5		 Guided
Discuss
Lab		 Mathematics Fraction Matcher (HTML5)
 Fraction Matcher
Standard Adding Algorithm Demonstration This contribution was designed by PhET. Beth Stade K-5 Demo Mathematics Make a Ten (HTML5)
Number Talks This contribution was designed by PhET. Beth Stade K-5 Demo
HW
Other		 Mathematics Make a Ten (HTML5)
Intervention and Targeted Practice Tips This contribution was designed by PhET. Beth Stade K-5 Other
Discuss		 Mathematics Make a Ten (HTML5)
Games Remote Lesson ideas This contribution was designed by PhET. Trish Loeblein HS
MS
K-5
UG-Intro		 HW
Remote		 Chemistry
Mathematics
Physics		 Area Builder (HTML5)
 Area Model Algebra (HTML5)
 Area Model Decimals (HTML5)
 Arithmetic (HTML5)
 Balancing Act (HTML5)
 Balancing Chemical Equations (HTML5)
 Build a Fraction (HTML5)
 Build an Atom (HTML5)
 Equality Explorer (HTML5)
 Expression Exchange (HTML5)
 Fraction Matcher (HTML5)
 Fractions: Equality (HTML5)
 Fractions: Intro (HTML5)
 Fractions: Mixed Numbers (HTML5)
 Graphing Lines (HTML5)
 Graphing Slope-Intercept (HTML5)
 Make a Ten (HTML5)
 Reactants, Products and Leftovers (HTML5)
(BNCC) Float or Sink? An essay on the density of materials - Part I Bernardo Dias K-5 Guided
Lab
Demo		 Physics
Mathematics
Biology
Earth Science
Chemistry		 Density (HTML5)
Heat or temperature? Bernardo Dias K-5 Lab
Demo
Guided
Remote		 Biology
Physics
Mathematics
Chemistry
Earth Science		 Energy Forms and Changes (HTML5)
Float or Sink? An essay on the density of materials - Part IV Bernardo Dias K-5 Demo
Guided
Remote
Lab		 Earth Science
Chemistry
Mathematics
Physics
Biology		 Density (HTML5)
Float or Sink? An essay on the density of materials - Part III Bernardo Dias K-5 Lab
Remote
Guided
Demo		 Biology
Mathematics
Earth Science
Physics
Chemistry		 Density (HTML5)
Float or Sink? An essay on the density of materials - Part II Bernardo Dias K-5 Remote
Lab
Demo
Guided		 Biology
Chemistry
Earth Science
Mathematics
Physics		 Density (HTML5)
Counting 1-10 Briana Clarke K-5 Guided Mathematics Number Play (HTML5)
NUMBER LINE (DISTANCE) OLUWAKEMI OGUNBIYI HS
K-5
MS
UG-Intro		 HW
MC
Lab
Discuss
Demo
Guided		 Mathematics Number Line: Distance (HTML5)
 Number Line: Operations (HTML5)
Types of Quadrilateral Achese Williams MS
K-5		 Guided Mathematics Quadrilateral (HTML5)
Using an Area Model to Multiply Rob Wilson MS
K-5		 Guided
HW
Remote		 Mathematics Area Model Introduction (HTML5)
Unit Rates Blessing Chukwuka K-5 Guided Mathematics Unit Rates (HTML5)
Add and Subtract WN & I RACHEL G LeTraunik K-5 Remote
HW
Discuss		 Mathematics Number Line: Operations (HTML5)
Determination of Value of Universal Gravitational Constant Dr Akhlaq Ahmad K-5
UG-Adv
MS
UG-Intro
HS
Grad		 Discuss
Guided
HW
Lab		 Mathematics
Physics		 Pendulum Lab (HTML5)
Determination of Value of Universal Gravitational Constant Dr Akhlaq Ahmad UG-Intro
K-5
MS
UG-Adv
HS		 HW
Lab		 Physics
Chemistry
Mathematics		 Gravity Force Lab (HTML5)
Finding Equivalent Fractions H. HENNINGS K-5 Guided
HW
Lab		 Mathematics Fractions: Equality (HTML5)
Mixed Number Intro Sharifa Footman K-5 Lab
HW
Guided		 Mathematics Fractions: Mixed Numbers (HTML5)
Exploring Area and Perimeter Jill Minello K-5 Guided Mathematics Area Builder (HTML5)
Area Model Intro Simulation Nailah Shah-Taylor K-5 Discuss
Guided		 Mathematics Area Model Introduction (HTML5)
Introduction to Equivalent Fractions Timothea Ratchford K-5 Guided Mathematics Fractions: Equality (HTML5)
Defining Functions Amy Goodman K-5 Lab
HW		 Mathematics Function Builder: Basics (HTML5)
Naming Fractions Bettie Parker K-5 Lab
Guided
Discuss
HW
Demo		 Mathematics Fractions: Intro (HTML5)
Equivalent Fractions Sherene Irvine K-5 Demo
Lab
HW
Guided
Discuss		 Mathematics Fractions: Equality (HTML5)
분수 만들기 SIM 사용설명서 이화국(Wha Kuk Lee) K-5 Demo
HW		 Mathematics Build a Fraction (HTML5)
 Build a Fraction
Fencing Spaces: Fixed Perimeter, Changing Area Krystle Hapner MS
K-5		 Guided Mathematics Area Builder (HTML5)
Constructing Functions Peter Boylan K-5 Lab
Guided		 Mathematics Function Builder (HTML5)
Exploring Rectangles (area and perimeter) Conor Doyle K-5 Guided
Lab
HW		 Mathematics Area Builder (HTML5)
Variables and Coefficients Lisa Nitzsche MS
K-5		 Discuss
Guided		 Mathematics Expression Exchange (HTML5)
Building Area and Perimeter Jasmine Sidana K-5 Guided Mathematics Area Builder (HTML5)
Creating a Garden Alanna Toomey K-5 Guided Mathematics Area Builder (HTML5)
How are products and factors related? Seda Serpin K-5 Lab
Guided		 Mathematics Arithmetic (HTML5)
Plano Cartesiano e Par Ordenado Eugeniano Brito Martins K-5 Discuss
Lab
HW		 Mathematics Equation Grapher
 Graphing Slope-Intercept (HTML5)
Matching Fractions Bethany Konz K-5
MS		 Guided Mathematics Fraction Matcher
Area Builder Lesson Stefanie Akrish K-5 HW
Guided
Lab		 Mathematics Area Builder (HTML5)
Building Fractions Nicole Scicutella K-5
MS		 Guided
HW		 Mathematics Build a Fraction
Double-Digit Addition Susan O'Reilly K-5 Guided Mathematics Make a Ten (HTML5)
Function Builder Esther Lok K-5
MS		 Lab
Guided		 Mathematics Function Builder (HTML5)
Friction and Motion Amanda Turkel K-5 HW
Lab
Guided		 Mathematics
Physics		 Forces and Motion: Basics
 Friction
Back to the Basics Nyetta Abernathy K-5
MS
HS		 Lab
HW		 Mathematics Arithmetic
 Build a Fraction
Fraction Matcher Grades 3-5 Molly Martin K-5 Guided Mathematics Fraction Matcher (HTML5)
 Fraction Matcher
Area Builder for grades 3-5 Molly Martin K-5 Guided Mathematics Area Builder (HTML5)
Teacher Michele Immediato K-5 Lab Mathematics Build a Fraction
Building Fractions Michellle Fiumefreddo K-5 CQs Mathematics Fractions Intro