diff --git a/src/codewars/kata_building_blocks.py b/src/codewars/kata_building_blocks.py
index e69de29..ee1d866 100644
--- a/src/codewars/kata_building_blocks.py
+++ b/src/codewars/kata_building_blocks.py
@@ -0,0 +1,24 @@
+class Block:
+    def __init__(self, dimensions: list):
+        self.width = dimensions[0]
+        self.length = dimensions[1]
+        self.height = dimensions[2]
+
+    def get_width(self):
+        return self.width
+
+    def get_length(self):
+        return self.length
+
+    def get_height(self):
+        return self.height
+
+    def get_volume(self):
+        return self.width * self.length * self.height
+
+    def get_surface_area(self):
+        return (
+            2 * self.length * self.height
+            + 2 * self.width * self.height
+            + 2 * self.width * self.length
+        )
diff --git a/src/codewars/kata_thinkful_quarks.py b/src/codewars/kata_thinkful_quarks.py
index e69de29..17c6d65 100644
--- a/src/codewars/kata_thinkful_quarks.py
+++ b/src/codewars/kata_thinkful_quarks.py
@@ -0,0 +1,8 @@
+class Quark(object):
+    def __init__(self, color, flavor):
+        self.color = color
+        self.flavor = flavor
+        self.baryon_number = 1 / 3
+
+    def interact(self, other) -> None:
+        self.color, other.color = other.color, self.color
diff --git a/src/codewars/kata_thinkful_vectors.py b/src/codewars/kata_thinkful_vectors.py
index e69de29..13196f8 100644
--- a/src/codewars/kata_thinkful_vectors.py
+++ b/src/codewars/kata_thinkful_vectors.py
@@ -0,0 +1,7 @@
+class Vector(object):
+    def __init__(self, x: int, y: int):
+        self.x = x
+        self.y = y
+
+    def add(self, other):
+        return Vector(self.x + other.x, self.y + other.y)
diff --git a/tests/codewars/test_building_blocks.py b/tests/codewars/test_building_blocks.py
index e69de29..09b6e00 100644
--- a/tests/codewars/test_building_blocks.py
+++ b/tests/codewars/test_building_blocks.py
@@ -0,0 +1,17 @@
+from src.codewars.kata_building_blocks import Block
+
+
+def test_block():
+    b1 = Block([2, 2, 2])
+    b2 = Block([41, 87, 67])
+
+    assert b1.get_width() == 2
+    assert b1.get_length() == 2
+    assert b1.get_height() == 2
+    assert b1.get_volume() == 8
+    assert b1.get_surface_area() == 24
+    assert b2.get_width() == 41
+    assert b2.get_length() == 87
+    assert b2.get_height() == 67
+    assert b2.get_volume() == 238989
+    assert b2.get_surface_area() == 24286
diff --git a/tests/codewars/test_thinkful_quarks.py b/tests/codewars/test_thinkful_quarks.py
index e69de29..935082e 100644
--- a/tests/codewars/test_thinkful_quarks.py
+++ b/tests/codewars/test_thinkful_quarks.py
@@ -0,0 +1,15 @@
+from src.codewars.kata_thinkful_quarks import Quark
+
+
+def test_quark():
+    q1 = Quark("red", "up")
+    q2 = Quark("blue", "strange")
+
+    assert q1.color == "red"
+    assert q2.flavor == "strange"
+    assert q2.baryon_number == 1 / 3
+
+    q1.interact(q2)
+
+    assert q1.color == "blue"
+    assert q2.color == "red"
diff --git a/tests/codewars/test_thinkful_vectors.py b/tests/codewars/test_thinkful_vectors.py
index e69de29..be0c95a 100644
--- a/tests/codewars/test_thinkful_vectors.py
+++ b/tests/codewars/test_thinkful_vectors.py
@@ -0,0 +1,13 @@
+from src.codewars.kata_thinkful_vectors import Vector
+
+
+def test_vector():
+    v1 = Vector(3, 4)
+    v2 = Vector(1, 2)
+
+    assert v1.x == 3
+    assert v2.y == 2
+    assert hasattr(v1, "add")
+    assert isinstance(v1.add(v2), Vector)
+    assert (v1.add(v2)).x == 4
+    assert (v1.add(v2)).y == 6