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U n t er r i ch t spl a n
Pro b l e m So l ving Us ing Ad d it io n
Altersgruppe: 1st Gr ade , 2nd Gr ade
Online-Ressourcen: I t T ake s a V i l l age , A ho y!
Opening
T eacher
present s
St udent s
pract ice
Class
discussion
10
10
15
5
5
min
min
min
min
min
Closing
M at h Obj e c t i v e s
E x pe r i e nc e problem solving.
P r ac t i c e addition up to 20.
L e ar n to solve problems using addition.
De v e l o p addition problem solving strategies.
Ope ni ng | 10 min
Bring to class 10 crayons, packed in pairs (5 packets), 9 in a pack of threes (3
packets) and 10 singles. Crayons are a suggestion, you may bring anything
that is convenient like marbles, pebbles, or even balls made of paper.
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Display the crayons and s a y : I have 3 packets containing 3 crayons each, 5
packets containing 2 crayons each, and 10 individual crayons.
Ask a student to choose a number between 0 and 10.
Example: student chooses number 7.
Ask another student to take 7 crayons from the table and give them to the
first student.
In most likelihood, the student will pick up 7 individual crayons to give it to
the first student.
A sk : Did he/she give the correct number of crayons to the first
student?
Yes.
Display the combination on the board.
1+1+1+1+1+1+1=7
Return the crayons on the table.
A sk : Is there any other combinations by which 7 crayons can be
given to the first student.
Yes.
Ask a student to choose another combination and display it on the board.
Encourage students to use all the possible combinations. So the board will
have:
1+1+1+1+1+1+1=7
1+1+1+1+1+2=7
1+1+1+2+2=7
1+2+2+2=7
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1+1+1+1+3=7
1+3+3=7
1+1+2+3=7
2+2+3=7
S ay : There are multiple ways to make 7.
Repeat this game as time permits.
T e ac he r pr e se nt s M at h game : I t T ake s a V i l l age - A dd | 10
min
Present Matific’s episode I t T a k e s a Villa g e - A d d to the class, in the
preset mode, using the projector or interactive whiteboard.
The goal of the episode is to use counting in relation to addition, ranging
from 0 - 20. You have to design a village by placing houses and trees. Each
house type comprises a fixed number of doors and windows. Design a village
satisfying the number of windows, doors, trees, and flowers needed.
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The screen opens to a village scene. There is a “building block bank” of
houses with 1 door and 1 window. The task is to create a village so there are
2 doors.
Read the expression and say : We need to design a village using 2
doors.
A sk : How many blocks would we need to have a total of 2 doors on
the scene?
2. (There is no challenge as there is only a single type of block).
Show how to drag the block on to the scene.
Drag 1 block and ask : Do we have 2 doors on the scene?
No, we have only one door so far.
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There could be a challenge here, as students may count the window in the
bank too. Emphasize it is not to be counted.
Drag another block and ask : Do we have 2 doors on the scene?
Yes, 1 + 1 = 2. We have 2 doors.
Click on “Done”. If the answer is incorrect the scene will wiggle.
A new screen, with two types of “building blocks” in the bank, appear. The
first “block” is a house with 1 window and 1 door while the second “block”
has 2 flowers and 1 plant. The task is to make a scene with 3 doors and 3
plants.
S ay : In this case, we have two constraints. We will work on each
separately.
A sk : How many houses do we need to have 3 doors?
3 houses. (1door + 1door + 1door = 3 doors).
A sk : How many garden block do we need to have 3 plants?
1 plant + 1 plant + 1 plant = 3 plants. So, we need three blocks to
have 3 plants.
Drag 3 houses and 3 garden blocks on the screen and click “Done”.
The new screen has three types of “building blocks” in the bank. Two “house
blocks” and one “garden block”. The first house has 1 window and 1 door
while the second has 3 windows and 1 door. The “garden block” has 2 flowers
and 1 plant. The task is to make a scene with 2 doors and 3 plants.
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A sk : Which “house block” can we use to get 2 windows?
1st house block.
We need to place 2 blocks to get 2 windows. (1 window + 1
window = 2 windows)
We cannot use the 2nd house block as it has 3 windows and we
need only 2 windows.
To get 3 plants drag 3 “garden blocks” on the screen.
Click “Done”.
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S t ude nt s pr ac t i c e M at h game : I t T ake s a V i l l age - A dd |
15 min
Have students play Matific’s episode I t T a k e s a Villa g e - A d d on their
personal devices. Circulate, answering questions as necessary.
In the event that some students finish playing the Matific’s episode I t
T a k e s a Villa g e - A d d , encourage students to play Matific’s episode
A h o y ! - A d d helping them with their difficulties, if any.
C l ass di sc ussi o n | 5 min
Dis c u s s :
What was challenging about the game? How did they manage to solve the
issue?
Did they come across situation where there was more than one solution?
What and why did they choose that option.
C l o si ng | 5 min
Print and bring to class the attached handout and distribute.
Discuss the exercises and assign it as homework. Also assign Matific’s
episode A h o y ! - A d d .
Pr in t a b le H a n d o u t : Pr o b le m S o lv in g
Circle the blocks to get 7 windows and 3 doors.
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Circle the blocks to get 5 flowers and 4 plants.
Circle the blocks to get 5 doors and 6 windows.
Circle the blocks to get 7 flowers, 5 plants, 8 windows and 3 doors.
Circle the blocks to get 14 windows and 6 doors.
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