geology student here and this video helped me understand contour line when I couldn't even visualize it. thanks greatly.

This is a brilliant explanation. Thank you for the visual representation, it really helped my son to understand.

Love the shirt 4 out of 3 people struggle with MATH

now I get it!!!! u r a brilliant teacher I always had a difficulty with this but you sir have made it so easy I can do it in a piece of cake!!!thank you so much

NOW I get it! What a great video ~ thanks for taking the time and putting in the energy and effort to make the model ~ that did it for me. You are an excellent teacher. Thank you!

Wow, We need more professors like you. Great video!!!

Thank you Sir. I am training to be a geography teacher in Yorkshire, England and I found this really helpful for my students. Keep up the good work.

Definitely a great visual tool to have students understand contours. Nice job John.

I learned to navigate before GPS back in the late 80's while in the infantry with the 3/75th but this is a GREAT training aid and very well done. If someone still can't grasp navigation after this, and some dirt time......well they should just stay on the hard pan in town. Keep up the great work.

Seriously outstanding work here, visualizing the true contours from the map is so important, and you clearly and dynamically do this with the cutaway hill model on the map. thanks!

Wow sir thank you very much, I'm about to write a test tomorrow and this really helped alot. Thank you.

Sir actually this video is excellent for even teachers and I hope you that you add more and more videos regarding geography and cartography and get the gratitude of several thousands of people

Great video! The use of the training aids really made a huge difference. When I looked at the contour lines then watched you start to stack the mountain that proverbial light bulb went off. That really helps a person see how a flat two-dimensional image relates to a three-dimensional object in the real world.

Such a great teacher you are.Am Excited of your talented way of teaching,i clearly now see and understand what exactly contours are.Thank you very much Sir.

this is actually good. I walked into seeing the old maps thinking that it is going to be boring but this man kept it brief without missing out anything. I really did not expect there to be a mountain model. I think this is what really makes this video stand out.

"now I get it". thank you John. Brilliantly simple training aid (though I am sure it took you and your wife alot of time to make, so big thank you). Shared.

That was great your a super good instructor. My trip to S.E. Asia 1960s had me learning real fast how to read a map this with the help of some good guys. Been many years since I used a map but you just snapped my memory back in place. Thank you much.

Well explained .. and the song was damn good

Thank you so much. I am agronomist and this video helped me a lot to understand contour lines. Very simple and very clear.

Now I got it. I would like to join as a student in your class. Thank you sir. Nice effort 👍

Love it , first video im commenting on since 5yrs now based on ur perfection of explanation

*EXCELLENT* training aid - nice job John & Denise! --Dave

Thank you for posting this explainer. It was helpful to me for doing my homework assignment about contour lines. I appreciate it!!

That training aid you developed was incredible! Thanks so much for this!!

Wow, very well explained. Great effort sir. Thank you!

Terrific explanation! Thank you for your time and effort! Excellent!

My goodness!!!! Is this really that easy to understand all along.... LOL Thank you so much Sir. You have no idea how amazed I am that I found this video. I would love to get my hands on that little puzzle figurine mountain. That's genius! :)

Great video, and the idea of the wooden mountain is brilliant Thank you

Excellent vid John.

Well done! Fantastic model and explanation! Loved it.

The was AWESOME!! I thoroughly appreciate your hard work, efforts and knowledge.

This is amazing. Great video, better understanding of contour lines. Thank you.

Thank you for thevaluable explanation for topography. Excellent!

thank you so much! I'm a woman preparing for solo adventures and your videos feel like trusty friends

Thank you dude!! I really needed this for art, bless you man!

From the Islands of Tonga I really appreciate your knowledge and understanding in your work...as a student myself this has helped a 16 yo to get to the right track...May GOD bless you and thank you.

This video is amazing! Thank you for sharing your knowledge and thank you for being so didactical. Now, I got it.

Fantastic work. This is probably the best video that i ever seen here on youtube. Thank you sir, your work much appreciated.

Thank you so much for your detailed explanation of contour lines! Your model helped me better grasp the concepts. KUDOS!

Amazing job explaining contour lines with the 3D props.

Excellent video. So very helpful and you’re absolutely right your model definitely helps to visualize the concepts. Thanks!

What a sterling explanation it was for such a sophisticated concept... really provided a humongous help in understanding it.. Thank u sir for putting such strenuous efforts

Absolutely fantastic. Thank you for this brilliant video and your efforts to impart valuable knowledge to all of us

Excellent! Such dedication to explain a subject.

Thank you so much........for this crystal clear amazing video...Learning will be easier if there are more people like you !!!!!

great instructional video John !

Amazing video. Nicely explained. Highly appreciable job

Your video help me during geography; I can really visualize the mountains now, thank you !

Thank you for taking the time to do this video, it's very clear. Thank you also for taking the time to actually make a wooden model, that really helped me visualise it.

It's really awesome. I love this video, thanks for your efforts, sir.

Thank you for magnificent work done on reproducing the hill to understand the topographic map.

very evident and helpful...Thank you for the visual presentation

this is the best video ive seen on contour lines thank you

Well done. That's an excellent teaching aid!

Wonderful video! Thank you so much for your efforts.

Thank u so much for this video.....the 3d sight u gave us for the contour made my whole concept clear!!!!

Thank you! You saved my butt on trying to figure this all out!

Thank you sir, I learned a lot from your video. Hats off to you for the hard work you put in for helping us to understand.

this is a great video..... lovely and precise explanation.. thank u very much

This is awesome!! Lightbulb moment for me!! Thank you!

Why don’t you upload anymore, I’ll need this channel for my future

That's the easiest explanation and the visual representation was so good, wonderful teaching skills sir 👏 😊

This video was truly helpful as in books we can only have the 2-d aspect of understanding but we got a visual on its 3-d interpretation.kudos

Sir, the model was fantastic. It re-assured my understanding of interpretation of those lines.

Perfect explanation 😊😊really helped with my test 🤗got almost full marks on it really passed with good rusults👍thank thank thank u

its excellent sir....my daughter has now a clear idea of contour line...thank you so much ..it was really helpful

Very informative video and very easy to understand the concept. Thank you sir

Good talk, keep talking. There really needs to be a most-excellent YT vid series on maps, map reading, contours, and all map item symbols etc, topography etc.

I had an okay understanding prior to your video. Now it's much better! Thanks great video!

Your model is brilliant!

loved it, the training aid is great. really helpful

Thank you very much sir for giving clear picture on the contour lines. This video is very helpful.

Excellent content. Thanks for sharing.

This is a great visual. Thank you!!

Great video. Really like the visual training aid.

Great video. Really helped me better understand underwater topo maps more. Thank you

Your model is so helpful. Get that into classrooms! Thanks so much.

Best explanations.. i thought i had it befor but now its really clear ... great job sir 🎯🍺

Hello Sir, Great 👍 stuff to understand and realise what the contours are..we want more videos of other types of 🗺 mapping,like isopach etc.;keep good work going..👌👌👍👏🏽👏🏽

Great video John, thank you!!!

Excellent job! Thank you so much for sharing this extremely didactic class! **From Brazil**

thank you so much, really informative and educational video.

Sir, EXCELLENT explanation(s). Oscar

Good explanation. Thanks a lot sir. Really so informative.

very helpful and great illustration

You gave me a clear understanding.Thank you.

Thank you uncle teacher for wonderfully explaining with that teaching aid....

Thank you so much for this video!!!! I finally understand topo maps!!!!!!!!!!!!!

Thanks for your nice explanation it really help me out to understand the concept of contour line thank you very much sir I am studying my geography and the theme is topographical maps and I was confused in contour lines but you have helped me thank you

great to have such teachers.👏👍

I recently took my 7th graders through a section on topo maps and contour lines. Wish I'd have found this vid before that section, but I'm still going to show this to them. Great vid. Thank you.

The best tutorial, thank you sir

great work, sir!! AMAZING

numbers going up ur going up Numbers going down “YOUR GOING DOWN”

Excellent knowledge buddy 👍

That model is fantastic!

Love your way of teaching sir ,Thank a lot ^_^

Woooowwwwwwwww....compelling, extrporinary way.. Thank you sir... N wt to say about staring of video 🔥 🔥

It's very useful and easier to understand contour lines, thank you very much.

Great video. I will be referring a friend to this. I think that he would benefit from this. Thanks for the awesome info!