1.31 Microscope Lesson

1.31 Microscope Lesson In this lesson, you’ll learn about the history and key parts of an essential scientific tool: the microscope. Microscopes have been around for centuries, but they continue to be updated, allowing us to see things we never…

1.30 Parts of a Microscope

1.30 Parts of a Microscope Learn about the parts of a microscope to see how they help us see small things. Explore the ocular lens, light control dial, slide, and the dial to raise or lower the slide, bringing it…

Hoffman Academy

Unit 1 Lessons 1–20 Repertoire Hot Cross Buns D Journey C Boogie Five Woodpeckers Frog in the Middle Chocolate Listen for Bells Skills Piano posture C & D major pentascales Transposing Rhythmic dictation Composing rhythms Improvisation basics Adding chords while…

1.35 Light and Dark

If you have ever wondered about the fascinating science of light, then keep reading! In this lesson, you will learn where light comes from, how it travels in waves, and what makes darkness. Without light, you wouldn't be able to read this right now!

10.6 Inverting a Matrix

10.6 Inverting a Matrix We have seen that we can solve the system of equations described by $$\begin{pmatrix} 3&-4 \ 2&-1\end{pmatrix}\begin{pmatrix} x \ y\end{pmatrix} = \begin{pmatrix} 5 \ -10\end{pmatrix}$$ with Cramer’s rule. Rather than grinding through(打破砂锅问到底) Cramer’s rule, it sure…

4.11 Ancient Greek Soldiers

4.11 Ancient Greek Soldiers They were some of the fiercest and most highly trained warriors on the ancient battlefield. Delve into the lives of Greek soldiers and discover their ways of life for yourself! Ancient Greek Mighty Men Just imagine…


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