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Cambridge university pdf guide for teaching and learning maths trough English classes.

https://www.unifg.it/sites/default/files/allegatiparagrafo/21-01-2014/teaching_maths_through_clil.pdf

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Here we can view a series of way long videos that explain how to teach science.

https://www.learner.org/resources/series90.html

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One of the most famous apps for learning languages.

https://play.google.com/store/apps/details?id=com.duolingo

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Here you can search for a wide variety of lesson plans, I've chosen introduction to statistics.

http://lessonplanspage.com/high-school-introduction-to-statistics/

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A very interesting app that lets you resolve difficult equations by taking a photo of them!!

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Another page full of interesting tools, not only lesson plans. Here I´ve fpund an interesting one about finding perimeter of a geometric figure.

https://www.education.com/lesson-plan/finding-perimeter/

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The future of the education, let teachers and students being in contact, create tasks, classes, and all on mobile

https://play.google.com/store/apps/details?id=com.google.android.apps.classroom

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Let's start with an interesting mathemathics game!

https://play.google.com/store/apps/details?id=com.november31.mathflashcards

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Next is an app for those who always forget formulas!

https://play.google.com/store/apps/details?id=com.nsc.mathformulas.lite

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And finally, one interesting app that lets you use it as a graphic calculator with very interesting features.

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A complete, but paid, resource page full of content. I've come across an exercise to calculate the surface area of an everyday figure.

https://www.lessonplanet.com/teachers/cereal-box-surface-area

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An article that tries to improve our math teaching skills.

https://www.homeschoolmath.net/teaching/teaching.php

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I've chosen this last one for commenting how I will use it on class.
Google classroom lets you make assignments, much like moodle, but also lets the student see what was done incorrectly, and correct it (here is a scheme of this feature: https://support.google.com/edu/classroom/answer/6020260?hl=en&ref_topic=7175284 )
So I think all the maths homework would be done this way, as mathematics is a discipline whose exercises may have only one correct answer, being able to show the students where they have failed, and teaching them to correct themselves would be a very interesting experience for themselves.
Apart of the homework, i thing that being in contact with the teacher would be very helpful for the students, and can help with their learning.
Theory materials should also be distributed by this app, and they must be put before the theory class, so the students can view the materials beforehand.

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I'm going to comment the application in class of this last material.
Beforehand I will let the students know that for the next class, they will have to bring an empty cereal box, or similar product box. Then, at class, we will start by taking measurements of them, and writing on the worksheet. After we can calculate the surface area and volume. With the weight posted on the box we can also calculate density, and compare the results.

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I'll comment those four principles of math teaching.

1. Let it make sense.
Your students must understand the application of what they are learning. I will use everyday examples for things such trigonometry, equations, etc.

2. Remember the goals.
The goals are not that students can multiply fractions or calculate volume of pyramids. The goals are that students deal with mathematics in this complex world, so you must have this on mind when teaching. I will not be slave of the math book and always try to emphatise the real world application of those exercises.

3. Know your tools.
Board, math book, some physical objects, and internet apps... Those are your tools and you need to know them. I will research on tools like the ones mentioned at this page, and try to improve each year with new ones. The appealing of maths will rise for the students, and the teaching will be much more comfortable with all of those tools helping the teacher.

4. Living and loving the math.
I, as the teacher, need to love maths. If i don't love them, my students will realize it, and they won't love them. If you are not comfortable with your work, you can't do it properly, and this will be noted by your students. So love maths, and they will make your live much easier!