First-degree inequalities with one unknown - introduction #2 [Linear equations and inequalities]

From this video you will learn:
- what are first-degree inequalities with one unknown,
- what are strict and non-strict inequalities,
- in what practical problems are inequalities used,
- how to solve text problems using inequalities,
- how to solve double inequalities,
- how to mark the solutions of inequalities on the number line and how to write them as an interval.
A more advanced version of this video lesson can be found on the Pi-stacja website:
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- MP4 file for downloading
- summary plate in PDF
- exercises: check your understanding (coming soon)
- subtitles for the hearing-impaired in SRT
- interactive test for playlist: test your knowledge on the topic (coming soon)
- official curriculum alignment
- additional materials you may want to use
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PLAYLIST
This video lesson is part of the playlist [Linear equations and inequalities]:
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In this playlist you will learn what the roots of an equation are and how to solve word problems using equations. You will learn what first-degree inequalities with one unknown are and how to solve them. You will learn how to distinguish a strict from a non-strict inequality, how to write and solve a double inequality and give the solution in the form of an interval. You will find that inequalities are useful when solving practical geometric problems. You will also learn how to convert infinite periodic decimal fractions to fractions and learn the difference between a rational and an irrational number.
ALL RESOURCES
All video lessons and other educational resources can be found on the Pi-stacja website: {{ pistacja.tv }}
PI-STATION PROJECT
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AUTHORS OF THIS VIDEO LESSON
Katalyst Education Foundation
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Tutor: Patryk Bojarski
Consultation: Krystyna Parszuto
Summary graphics: Agnieszka Opalińska
Materials: Patryk Bojarski
Editor: Małgorzata Załoga
MATERIALS USED
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Katalyst Education (CC BY) katalysteducat...
© Film available under the Creative Commons Attribution license (creativecommon.... This means that you can use it however you want, as long as you write that it comes from us. We only do not allow the use of the graphic sign of the Pi-stacja project and the graphic sign of the Pi-stacja Mathematics channel separately from this film. Correct attribution: Pi-stacja Mathematics/Katalyst Education (CC BY).
ID: plmat111 / mat00607

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