Experienced science Teacher ,specializing in Primary and Preparatory education.
Experienced in teaching Egyptian students as well as international curricula.
Skilled in delivering clear, well-structured Science lessons in both Arabic and English, with a focus on understanding scientific concepts and improving students’ academic performance.
Teaching FormatOnline
LanguagesArabic, English
Session PriceEGP 200 – 300 / session
Teaching Combinations
Complete approved teaching information.
Egyptian National • School Curriculum • Biology • Year 4, Year 5, Year 6, Year 7, Year 8, Year 9
Recent Ask NextDars Answers
See how this teacher explains real student questions.
Why do we measure mass in kg but weight in Newtons? Aren’t they basically the same thing?
Esraa Ahmed's answer
the two are related, but they’re not the same physical quantity.
Mass (kg): tells us how much matter an object has. It stays the same wherever you take the object.
Weight (N): is the force of gravity acting on that mass.
The formula is:
Weight = mass × gravitational field strength
W = m × g
So, same object has the same mass everywhere, but its weight changes if gravity changes.
I understand that mitosis and meiosis are both types of cell division, but I keep mixing them up. Why does mitosis produce 2 cells while meiosis produces 4, and what happens to the chromosome number in each one?
Esraa Ahmed's answer
The key that /
Mitosis
A parent cell has 46 chromosomes.
Before division, the DNA is copied, but the chromosome number is still considered 46.
Then the cell divides once:
46 chromosomes → 2 cells, each with 46 chromosomes
So: Mitosis = 1 division → 2 cells → same chromosome number
Meiosis
The parent cell also starts with 46 chromosomes.
The DNA is copied once,
but then the cell divides twice:
46 → Meiosis I → 2 cells with 23 chromosomes each →
Meiosis II → 4 cells with 23 chromosomes each