Ligevægts-visning: To variabler
|
Download
Gem
Indhold
- Ligninger
- Uligheder
- System af ligninger
Beskrivelse
Opdag hvad det betyder for et matematisk udsagn
Læringsmål
- Løs og manipulér algebraiske ligninger ved at erstatte forskellige værdier for en variabel
- Brug en balancemodel for at løse en ligning for én ukendt, og begrund dine strategier til løsning
- Byg et system af ligninger
- Bestem løsningenmåden for et system af ligninger
Standardjustering
Fælles indhold - matematik
6.EE.B.5
Understand solving an equation or inequality as a process of answering a question: which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.
6.EE.B.6
Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.
7.EE.B.3
Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies. For example: If a woman making $25 an hour gets a 10% raise, she will make an additional 1/10 of her salary an hour, or $2.50, for a new salary of $27.50. If you want to place a towel bar 9 3/4 inches long in the center of a door that is 27 1/2 inches wide, you will need to place the bar about 9 inches from each edge; this estimate can be used as a check on the exact computation.
7.EE.B.4
Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.
8.EE.C.7
Solve linear equations in one variable.
8.EE.C.7a
Give examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form x = a, a = a, or a = b results (where a and b are different numbers).
8.EE.C.8
Analyze and solve pairs of simultaneous linear equations.
HSA-CED.A.1
Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and simple rational and exponential functions.
HSA-CED.A.3
Represent constraints by equations or inequalities, and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods.
HSA-REI.A.1
Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.
HSA-REI.B.3
Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters.
Version 1.0.12
Lærertips
 |
Oversigt over SIM-kontroller, modelforenklinger og indsigt i studerendes tænkemåder ( PDF ). |
Aktiviteter indsendt af lærere
| Middle School Math Sim Alignment |
|
Amanda McGarry | Mellemskole | Anden | Matematik | |
| SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017) |
|
Diana López | Mellemskole Highschool |
Anden | Biologi Fysik Matematik Kemi |
|
| PREPARATORIA: Alineación de PhET con programas de la DGB México (2017) |
|
Diana López | Highschool UG-Intro |
Anden | Fysik Matematik Kemi |
or Run 
HTML5-simuleringerne kan køre på iPads og Chromebooks såvel som pc-, Mac- og Linux-systemer.
iPad:
iOS 12+ Safari
iPad-kompatible simuleringer
Android:
Ikke officielt understøttet. Hvis du bruger HTML5-simuleringer på Android, anbefaler vi at bruge den nyeste version af Google Chrome.
Chromebook:
Seneste version af Google Chrome
HTML5- og Flash - PhET-simuleringerne understøttes på alle Chromebooks.
Chromebook-kompatible simuleringer
Windows-systemer:
Microsoft Edge, seneste version af Firefox, seneste version af Google Chrome.
Macintosh Systems: < / b>
macOS 10.9.5+, Safari 9+, seneste version af Chrome.
Linux-systemer:
Ikke officielt understøttet. Kontakt phethelp@colorado.edu for fejlfinding.
| Designteam | Tredjeparts biblioteker | Tak til |
|---|---|---|
|
|
