First assignment - Lukas and Migle

Method 1.
Since Migle wasn't at school we measured Monika's height which was 1.60m. Then we counted how many times Monika would fit into the trees height. The answer was 6 times 1.60m is equal to 9,6m

Method 2.

First I found a stick whose length was equal to my fully extended arm, which was 71cm. I held it vertically and walked backwards until the stick was as high as the tree the distance from me to the tree was 9,20m. Then I did the proportion: a=b=71cm as A=B=9.20m

A:a=B:b=920cm:70cm=12,9m








Method 3.
We weren't able to do it because the weather was very grainy.

First assignment - Evelina and Linas

Method 1
 

First we measured Linas’s height. It was 1.81 m. Then we measured how many times can Linas be put on top of himself to reach the top of the tree. He can be put on top of himself 4 times.

1.81 x 4 = 7.24 m.

It was easy so we haven’t got any problems.

Method 2
 

First we found a stick that was at least the length as our arms. It was 60 cm long. We hold the stick vertically. Then Linas stood next to the tree and started walking backwards until the stick was as big as the tree. The distance was 9.4 m. In the end we used the similar triangles' properties to calculate the tree's height. The answer was 9.4 m.

 

 
 
 
 
 
 












Method 3

We couldn’t do it because the sun was not shining.

First assignment - Emilija and Aistė.

Method 1

* Emilija's height - 1,66 m
* We measured how many times can Emilija be put on top of herself to reach the top of the tree - 5 times.
* 1,66*5=8,3 m
* It wasn't difficult so we haven't got any problems.

Method 2

* Our teacher gave us big ruler, Emilija's hand was 60cm
* Then Emilija stood next to a tree and started walking backwards.
* She stopped then when the ruler was as tall as tree was.
* We measured distance between Emilija and the tree - 8,2m
* So based on triangle similarity feature we measured tree height - 8,2 m.

a = b = 60cm
A = B = 9,2m

* Because big triangle is similar to small, so when a=b, then A=B. Meaning the distance from Emilija (A) = the height of the tree (B).

Method 3

* We couldn't do the assignment because there was no sun in Lithuania.

Made by: Sara, Julie, Winnie, Edvinas and Mantas. First assignment

                                                                               Made by: Sara, Julie, Winnie, Edvinas and Mantas

Which problems did you have with the different methods?
- We didn’t have any problems with the methods.

Which problems are there with the different methods-uncertainty?
-Method 3 cant you make if the sun not shine. And we don’t think there are problems with the others methods.

Which advantages are there with the different methods?
-It’s very clever that there are 3 methods so you can compare the results.

Make a conclusion on which method you think give the most exact result.
-We think method 1 is the best because we have some exact measurement. And we can make it in all kind of weather.

First assignment

From Denmark
Method 1-stacking friends

160/10,5=15,23809524
15,23809524*5,5=83,80952381

83,80952381+160=243,80

                                                                                                         

Method 2- stick in hand

70*3,3=231

  

Method 3- the sun

504*41/90=229,6  

            

   From Lithuanian

Method 1-stacking friends

1,93*4,5=8,7m

Method 2- stick in hand

a=b=60cm=0.6m                                                                                                                                A=9.2m

                                                                                                                                                                   

Log book

3^th October 2013
we read the assignments, so we knew what to do.
And we made the assignment method 3- the sun.  We made it that day because the sun was out.

24^th October 2013                                                                                                                                     LT: We got our assignments and started analyzing it.

28^th October 2013
we started to make the assignment method 1- Stacking friends
but we took a picture and did it in paint.

31^th October 2013
DK: we started to make the blog entry. And drew on the picture from method 2

1st November 2013
DK: we started to make this log book. And we were done with the 3 methods.

5^th November 2013                                                                                                                                     LT: we started our first assignment, we took pictures and calculated everything.

15^th November 2013
DK: contacted Edvinas and Mantas, so we can find a day we can talk about the assignments.

14^th November 2013                                                                                                                             LT:  We made our second assignment.

15^th November 2013                                                                                                                              LT: We contacted Sara, Winnie and Julie, we talked about our assignments and how we did it.

16^th December 2013

DK: we finished the assignment and answered the questions about the assignment. And then we send the assignment to you from Lithuanian.  

Our project: Nicole, Kirsten, Tomas and Edvinas            

Assignment 1.

Method 1 – Stacking friends

Denmark: We measured the height of Nicole, and then we tried to see how many times she was as high as the tree. Then we found out that the tree was 4 times higher than Nicole. We multiplied 170 cm (her height) with 4 (how many times the tree is higher), and the answer of the tree height is 6, 80 m.

Lithuania: Edvinas measured the height of Tomas, and then Tomas stood next to a tree, near our school. Edvinas tried to see, how many times, the tree was bigger – 3 times. Then we multiplied 166cm (the height of  Tomas) with 3 and got the result of 498cm = 4,98m.

We didn’t take a picture, sorry!

Assignment 2.

Method 2 – stick in hand

Denmark: Nicole took a stick that was as long as her arm. She walked backwards and then she stopped when the stick was as high as the tree, from her distance. The distance between the tree’s ground and Nicole, is now as high as the tree.  

Lithuania: Edvinas found a stick, that is as long as his arm (59,4cm). Then he stood next to a tree and started walking backwards. He stopped, when the stick was as tall as the tree was. The distance between Edvinas feet and the tree was 8m.

800/59,4*59,4 = 800 cm (8.00 m)

Assignment 3.

Method 3 – The sun

Denmark: We couldn’t do the assignment because there is no sun in Denmark, right now.

Lithuania: There was no sun here either.

Our conclusion:

Denmark: We think that the first method is the best, because it is easier to figure out what to do.

Lithuania: We agree with Denmark, the firs method was easy but,  the second one was a little bit complicated.

First assignment - Simona & Mantas.J

Method 1.


 We measured Simona's height which was 1.62m, then went 30 meters away from the tree and counted how many times Simona will fit into the tree's height. Then we did the math 1.62 x5 = 8.91 Answer: 8.91 Simona could fit 5 times. tree's height 8.91m


Method 2.


 First we found a stick the same length as our arm's. the length of the stick was 62cm,then grabbed it vertically, keeping in mind that the arm must be fully extended and straight, then we stud opposite to the tree. And we headed backwards until the stick is as big as the tree. The distance from the tree to where we were standing was 10.10 m. We used the similar triangles' properties to calculate the tree's height. And the proportion 66:10.10 By 66:X
Answer 10.1
            
 
Method 3.


 We didn't do it because of the sun which was not shoeing.  

Method 1- 3/10 2013

Method one!

This method was a bit tricky, mostly because we did not know how tall Konstantin was, but else I think it was okay and somewhat easy. Only because we only needed a picture of, Konstantin next to a tree. We did not have very many problems using this method. It was easy, but maybe not so accurate.

Konstantin Was 1,70cm tall and we could stack him 7-8 times to reach the top of the tree.

So it’s 1, 70x7-8= 12, 75

I do not know how accurate it is, but it is easy.

Method 2 28/10 2013

The weather was not with us in Method 2

This method was a bit more difficult to do, because we needed a lot of things for this meter, the mathematical issues on this I found a bit hard so we got some help on that. However, when I figured it out, there was another problem, to find a stick that was a long as my arm, the weather made this task even more annoying, but that did not made the method worse.

We walked about 10 meter from the tree, so we figured out by looking at the task, that the tree was 10 meters high.

We found out that my arm was 70 cm long, so we found a stick that was a meter long so it was almost  close.                                                                                           

As I said, I found the mathematical problems hard in this one.

Method 3

Our weather has not allowed us to3make this method, because the weather here is bad L

Task number 2 is more precise and correct but much harder to do, and you need to be mathematical to really get something out of that method, but method 1 is much more easy to do, but maybe not as accurate as method 2.

The reason why we are not including method 3 is that we did not make it, because of the sun that is not here.

If you want to measure the height of the tree using method 2 you have to almost 100% correct, for it to be correct, so our conclusion is that, method 1 is the best one.

03/10-13

We found a tree and Michelle stood next to it and Maria and Miklas measured with theirs hands. And we found out that Michelle could be there five times.  Afterwards we found out how tall Michelle are/was, Michelle was 159,5 cm tall and we writed it down at a paper.

 

28/10-13

We took a picture with Michelle and the tree and then Miklas found a stick as long as his arm. We hold the stick, so the top of the stick was at the top of the tree when we looked at it when we hold it in our arm. And the bottom of the stick was at the bottom of the tree. We measured how many metre we was from the tree.

We calculate:

X*Y

159,5*7

 

We went inside and we calculate how tall the tree was/are in “active inspire” and we loaded the picture we took from the other day. And then we used the formula:

        A1B1    =    B1C1

        AB        =     BC

 

       1000   =     X

       70       =     70

 

1000/70 =  X/70

    70       =   70

 

1000     =   X

To calculate how high the tree was/is.

 

16/12-13

  We writed the assignment and put it into the blog and then we writed to Emilja and Aiste over facebook.

 

19/12-13

We put the log book into the blog and writed to Emilja and Aiste.

First assignment - Nan and Mia Maja

First assignment

 Made by Nan and Mia Maja

Method 1

163*5.5=896.5 cm (8.96 m)

Method 2

The length of Mia Maja’s arm: 60,5 cm

The length of Mia Maja’s foot to the tree: 9 m

900/60,5=X/60,5 cm

900/60,5*60,5 = 900 cm (9.00 m)

Method 3

The length of the trees shadow: 1847 cm

The length of the stick: 25 cm

The length of the sticks shadow: 51 cm

1847*25/51=905,39 cm (9.05 m)

Diary – Method 1

03/10-2013 10.00 – 11.35 AM

The first thing we did was taking a picture of Mia Maja and the three. Afterwards we uploaded it to the computer, measured Mia Maja’s height and figured the method out. Instead of figure the task out by rule of thumb, we took a picture and figured the task out on the computer.

Diary – Method 2

28/10-2013 10.50 – 11.35 AM and 12.00 – 12.50 PM

We started by finding a really big ruler and measured Mia Maja’s arm. Then Mia Maja walked backwards until the three was completely covered by the ruler. After that we measured the distance from Mia Maja’s foot to the three and figured out how tall the three is. We had a little issue by finding the right formula.

Diary – Method 3

5/11-2013 13.00 - 14.30 PM

The last task was a little bit hard to make because of the sun didn’t shine in a lot of our school lessons. One day the sun finally shined, and we hurried up, and measured the length of the trees shadow. Then we found a stick, and measured it as well. To figure out the task we used the formula h = t x p / s, which we found on the blog. 

We think method 1 is the best because it is the most precise. It was also the easiest method to figure out.

First assignment

Method 1:

The answer we got is 9.35m

Method 2:

First assignment - Natan, Christian

First assignment.

The purpose of this assignment is to see which of three methods is the best to measure a tree.

Method 1: Method one is about to see if u can measure a tree, with staking a person with help of the eye of sight.

Calculations: The person is 1,7 meters, and we stacked him four times and that is about 6,8 meters (4*1,7=6,8 meters)

Method 2: In method two, we took a stick and measured the length of the stick holders arm and then he took some steps away from the tree until the stick covered the tree form our line of sight. Then we measured the distance form the tree to the stick holder.

Calculations: Arm length is 60 cm. and the distance form the tree to the stick holder is 840 cm. (60*840/60=8,4 meters)

Method 3: In method three we measured the shadow of the tree and divide it with 2,5(Because the shadow is bigger than the tree)  to see how big the trees height.

Calculations: The length of the shadow is 15 cm. (15:2,5=6 meters)


Logbook:
October 28th we started on method one, we had no problems with method one because the weather was nice, and it did not take long before we found a tree.

October 31th we started on method two and three. we choose to begin with method 3 because  the sun was shining bright so it was easy to see the shadows. And method two was easy because we used a big 1 meter ruler as a stick, that made it easy for us to measure the length.