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Ethio High-school™

📚 Ethio High-School – 𝒚𝒐𝒖𝒓 𝒈𝒂𝒕𝒆𝒘𝒂𝒚 𝒕𝒐 𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝒆𝒅𝒖𝒄𝒂𝒕𝒊𝒐𝒏! 🎓 ✯ We provide high school students with educational informations, questions, study tips, and subject explanations to help them excel. For promotion @tdem_e

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Ethio High-school™

Apr 27, 2026, 09:55 PM

📎 File

EHS ©️

422

Ethio High-school™

Apr 27, 2026, 09:55 PM

Matrices

☛ A matrix is a rectangular array of numbers arranged in rows and columns.

☛ A matrix is usually denoted by capital letters (e.g., A, B, C).

☛ Each number in a matrix is called an element or entry.

⊙Notation
☛ If a matrix A has m rows and n columns, we write it as Aₘₓₙ (m by n matrix).

✔️ Types of Matrices

☑Row matrix: Only one row (e.g., [2 3 5])

☑Column matrix: Only one column

☑Square matrix: Same number of rows and columns

☑Zero (Null) matrix: All elements are 0

☑Diagonal matrix: Only diagonal elements are non-zero

☑Scalar matrix: Diagonal matrix with same diagonal values

☑Identity matrix (Iₙ): Diagonal = 1, rest = 0

☑Symmetric matrix: A = Aᵗ (transpose)

☑Skew-symmetric matrix: A = -Aᵗ

✔ Matrix Operations

a) Addition and Subtraction

☛ Only possible if matrices have same order

☛ Add/subtract corresponding elements

b) Scalar Multiplication

☛ Multiply each element by a scalar (number)

c) Matrix Multiplication

Multiply Aₘₓₙ × Bₙₓₚ results in Cₘₓₚ

Rule: Multiply row by column

☑️

338

Ethio High-school™

Apr 27, 2026, 09:55 PM

Transformation on the plane

☛ A transformation of the plane refers to a rule or function that moves or changes the position, size, or orientation of points in the coordinate plane. These transformations are often studied in geometry and linear algebra.

📝There are three main types of transformations in the plane

1. Translation

✔Definition: Slides every point of a figure the same distance in the same direction.

✔Effect: No change in shape, size, or orientation.

Example

(x,y) → (x + a, y + b)

✅where a and b are constants.

2. Rotation

✔Definition: Turns a figure around a fixed point (called the center of rotation) by a certain angle.

✔Effect: Shape and size stay the same, but orientation changes.

🎱Common Rotations

90° counterclockwise: (x, y) → (-y, x)

180°: (x, y) → (-x,-y)

270° counterclockwise: (x, y) → (у, -x)

3. Reflection

✔️Definition: Flips a figure over a line (like a mirror).

🎱Common Reflections

✅Over the x-axis: (x, y) → (x, -y)

✅Over the y-axis: (x, y) → (-x, y)

✅Over the line y = x: (x,y) (y, x)

✉️ 🏛

239

Ethio High-school™

Apr 27, 2026, 09:55 PM

How to Read Effectively for the Grade 12 Entrance Exam in 1 Month

1. Set Clear Goals🛡

● Know what to read (eg. Grade 11 & 12 content).

● Focus on EUEE-relevant topics.

● Use the exam blueprint or past papers to understand what's common.

2. Use Active Reading (Not Just Looking at Notes)✏️

● Summarize in your own words.

● Ask yourself: “Can I explain this to someone else?”

● Use highlighters or colors to mark key points.

3. Use the “Pomodoro” Method💯

● Study 25–30 minutes, rest 5 minutes.

● Do 4 rounds, then take a longer 15–30 minute break.

● This prevents fatigue and boosts focus.

4. Focus on Understanding First, Memorize Later✍️

● Don’t rush to memorize formulas or definitions.

● First, understand why and how the concept works.

● Use real-life examples or visuals when possible.

5. Practice Daily 📆

● Solve questions after every topic.

● Don’t just read—practice past papers and mock tests.

● Learn from your mistakes, not just correct answers.

6. Teach Others or Talk Aloud🙌

● Teaching is the best way to learn.

● Explain what you just read out loud or to a friend.

● It builds confidence and highlights what you don’t know.

7. Revise Regularly👍

● Keep a revision notebook for formulas, definitions, and diagrams.

● At the end of the day, revise what you studied.

● Weekly review: Re-read your summaries every Sunday.

8. Limit Distractions⛔️

● Study in a quiet place.

● Turn off social media

9. Use All Your Senses👍

● Read aloud, write summaries, draw diagrams.

● Listen to audio lessons or videos if you get tired of reading.

10. Take Care of Your Body🍔

● Sleep at least 6 hours.

● Eat brain-friendly foods (like fruits, water, eggs). Specially water

● Take short walks or stretch during breaks.

✉️ ☑️

Ethio High-school™

Apr 27, 2026, 09:55 PM

To All 2025-2026 Remedial Program Students 📢

🗓️ The tentative schedule for the National Exam is set for 'Ginbot 17-20, 2018' E. C. 📅

Credit- Ambo university 🏫

433

Ethio High-school™

Apr 27, 2026, 09:55 PM

📷 Photo

የዘንድሮ የ12ኛ ክፍል ተማሪዎች የተሻለ ውጤት እንዲያስመዘግቡና የፈተና አሰጣጥ ሥርዓቱ ዘመናዊ እንዲሆን የትምህርት ሚኒስቴር ሰፊ ዝግጅት እያደረገ መሆኑን አስታውቋል።

ሚኒስትሩ ብርሃኑ ነጋ (ፕ/ር) ለሕዝብ ተወካዮች ምክር ቤት ባቀረቡት ሪፖርት ዋና ዋና የተከናወኑ ተግባራትን እንደሚከተለው አብራርተዋል።

🖥️ ፈተናው በበይነ-መረብ (Online) ብቻ!

የዘንድሮው የ12ኛ ክፍል ብሔራዊ ፈተና ቀድሞ ከነበረው አሰራር ወጣ ባለ መልኩ ሙሉ በሙሉ በኦንላይን ለመስጠት ዝግጅት እየተጠናቀቀ ይገኛል።

ፈተናውን በቴክኖሎጂ የታገዘ ለማድረግ የሚያስፈልጉ የቴክኖሎጂ ግብዓቶች እየተሟሉ ነው።

ተማሪዎች በፈተና ወቅት ግራ እንዳይጋቡ ከፈተናው በፊት በቂ የቴክኖሎጂ መልመጃ (Mock Exam) እንዲያደርጉ ይደረጋል።

📚 ባለፉት ዓመታት የታየውን ዝቅተኛ የፈተና ውጤት ለመቀየርና ተማሪዎችን ለስኬት ለማብቃት ከ400 ሺህ በላይ ተማሪዎች ልዩ የማጠናከሪያ ትምህርት (Tutorial) እየወሰዱ ይገኛሉ። ይህ ስልጠና ተማሪዎች በፈተናው በቂ እውቀትና በራስ መተማመን እንዲኖራቸው ለማድረግ የታለመ ነው።

እየተከናወኑ ያሉ የሪፎርም ስራዎች ተስፋ ሰጪ ውጤቶች እየታዩባቸው መሆኑ ተገልጿል። ውስንነቶችንም በመለየት በቀጣይ የተሻለ የትምህርት ጥራት ለማረጋገጥ መግባባት ላይ ተደርሷል።

ዘመኑ የቴክኖሎጂ ነው! ዝግጅታችሁን አጠናክሩ፤ ውጤታችሁ የጥረታችሁ ውጤት ብቻ ሳይሆን የሀገራችን የትምህርት ለውጥ ማሳያም ይሆናልና።

314

Ethio High-school™

Apr 27, 2026, 09:55 PM

📎 File

Biology 1000 questions

641

Ethio High-school™

Apr 27, 2026, 09:55 PM

📷 Photo

ለክርስትና እምነት ተከታዮች በሙሉ እንኳን ለፋሲካው በዓል በሰላም አደረሳችሁ!

Happy Easter

538

Ethio High-school™

Apr 27, 2026, 09:55 PM

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EUEE 2017: All Subjects with Answers ✅📚

763

Ethio High-school™

Apr 27, 2026, 09:55 PM

[poll]

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Ethio High-school™

Apr 10, 2026, 06:55 AM

[poll]

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Apr 10, 2026, 06:55 AM

[poll]

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Apr 10, 2026, 06:55 AM

[poll]

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Apr 10, 2026, 06:55 AM

[poll]

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Ethio High-school™

Apr 10, 2026, 06:55 AM

📷 Photo

የ12ኛ ክፍል ብሔራዊ ፈተና ይዘት ይፋ ሆነ!

የ2018 የትምህርት ዘመን የ12ኛ ክፍል ተፈታኞች የትኩረት አቅጣጫቸውን እንዲያውቁ፣ የትምህርት ምዘናና ፈተናዎች አገልግሎት የፈተና ዓይነቶችንና የይዘት ሽፋኑን በይፋ አስታውቋል። በወጣው መመሪያ መሠረት፣ ፈተናው የሚከተሉትን የትምህርት ዓይነቶች ያካትታል፦

• በተፈጥሮ ሳይንስ፦ እንግሊዝኛ፣ ሒሳብ፣ ስኮላስቲክ አፕቲትዩድ፣ ባዮሎጂ፣ ኬሚስትሪ እና ፊዚክስ።

• በማኅበራዊ ሳይንስ፦ እንግሊዝኛ፣ ሒሳብ፣ ስኮላስቲክ አፕቲትዩድ፣ ሂስትሪ፣ ጂኦግራፊ እና ኢኮኖሚክስ።

የይዘት ሽፋንና አዘገጃጀት፦
ፈተናው ከ9ኛ እስከ 12ኛ ክፍል ያሉትን ሁሉንም ምዕራፎች የሚሸፍን ሲሆን፣ አወቃቀሩም የሚከተለው ነው፦

• 9ኛ ክፍል፦ በቀድሞውና በአዲሱ ሥርዓተ ትምህርት የጋራ ይዘቶች ላይ ያተኩራል።

• ከ10ኛ እስከ 12ኛ ክፍል፦ ሙሉ በሙሉ በአዲሱ ሥርዓተ ትምህርት ላይ የተመሠረተ ይሆናል።

• ኢኮኖሚክስ፦ በአዲሱ ሥርዓተ ትምህርት መሠረት ከ10ኛ እስከ 12ኛ ክፍል ያለውን ይዘት ይሸፍናል።

263

Ethio High-school™

Apr 10, 2026, 06:55 AM

Grade 12 Biology unit 4 question poll👇👇

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Ethio High-school™

Apr 10, 2026, 06:55 AM

[poll]

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Apr 10, 2026, 06:55 AM

📷 Photo

#ጥቆማ

በ2018 ዓ.ም የ12ኛ ክፍል ሀገር አቀፍ ፈተና ለመውሰድ እየተዘጋጁ ነው?

በትምህርት ሚኒስቴር የተዘጋጁ አጋዥ የትምህርት ይዘቶች እና የመለማመጃ ጥያቄዎችን የያዙ ቪዲዮዎች በድረ-ገፅ ያገኛሉ።

ይለማመዱ 👇
https://examinfo.moe.gov.et/guides

የዘንድሮው የ12ኛ ክፍል ሀገር አቀፍ የመልቀቂያ ፈተና በሰኔ ወር እንደሚሰጥ ይጠበቃል።

|| 📱 https://youtube.com/@ethiohigh_school?si=QXQEkypMYtnERJU8

324

Ethio High-school™

Apr 10, 2026, 06:55 AM

How to Read Effectively for the Grade 12 Entrance Exam in 1 Month

1. Set Clear Goals🛡

● Know what to read (eg. Grade 11 & 12 content).

● Focus on EUEE-relevant topics.

● Use the exam blueprint or past papers to understand what's common.

2. Use Active Reading (Not Just Looking at Notes)✏️

● Summarize in your own words.

● Ask yourself: “Can I explain this to someone else?”

● Use highlighters or colors to mark key points.

3. Use the “Pomodoro” Method💯

● Study 25–30 minutes, rest 5 minutes.

● Do 4 rounds, then take a longer 15–30 minute break.

● This prevents fatigue and boosts focus.

4. Focus on Understanding First, Memorize Later✍️

● Don’t rush to memorize formulas or definitions.

● First, understand why and how the concept works.

● Use real-life examples or visuals when possible.

5. Practice Daily 📆

● Solve questions after every topic.

● Don’t just read—practice past papers and mock tests.

● Learn from your mistakes, not just correct answers.

6. Teach Others or Talk Aloud🙌

● Teaching is the best way to learn.

● Explain what you just read out loud or to a friend.

● It builds confidence and highlights what you don’t know.

7. Revise Regularly👍

● Keep a revision notebook for formulas, definitions, and diagrams.

● At the end of the day, revise what you studied.

● Weekly review: Re-read your summaries every Sunday.

8. Limit Distractions⛔️

● Study in a quiet place.

● Turn off social media

9. Use All Your Senses👍

● Read aloud, write summaries, draw diagrams.

● Listen to audio lessons or videos if you get tired of reading.

10. Take Care of Your Body🍔

● Sleep at least 6 hours.

● Eat brain-friendly foods (like fruits, water, eggs). Specially water

● Take short walks or stretch during breaks.

✉️ ☑️

Ethio High-school™

Apr 10, 2026, 06:55 AM

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Apr 4, 2026, 04:56 AM

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English by Himanshu Yadav Sir

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English Literature Club channel

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