diff --git a/data_structures_and_algorithms/challenges/BinaryTree/binary_search.py b/data_structures_and_algorithms/challenges/BinaryTree/binary_search.py
new file mode 100644
index 0000000..2b92465
--- /dev/null
+++ b/data_structures_and_algorithms/challenges/BinaryTree/binary_search.py
@@ -0,0 +1,24 @@
+from data_structures_and_algorithms.data_structures.stacks_and_queues.stacks_and_queues import Queue Node
+
+
+def breadth_first_traversal(tree, action=print):
+    if tree.root is None:
+        return False
+    action(tree.root.val)
+    qu = Queue()
+    if tree.root.left:
+        qu.enqueue(tree.root.left)
+    if tree.root.right:
+        qu.enqueue(tree.root.right)
+    top = qu.front
+    while top:
+        node = top.val
+        action(node.val)
+        if node.left:
+            qu.enqueue(node.left)
+        if node.right:
+            qu.enqueue(node.right)
+        top = top.next
+    
+    
+    
\ No newline at end of file
diff --git a/data_structures_and_algorithms/challenges/BinaryTree/read.md b/data_structures_and_algorithms/challenges/BinaryTree/read.md
new file mode 100644
index 0000000..e6d912f
--- /dev/null
+++ b/data_structures_and_algorithms/challenges/BinaryTree/read.md
@@ -0,0 +1,29 @@
+# code challenge 16 
+
+
+# code challenge 17
+
+Write a breadth first traversal method which takes a Binary Tree as its unique input. 
+Without utilizing any of the built-in methods available to your language, 
+traverse the input tree using a Breadth-first approach, 
+and return a list of the values in the tree in the order they were encountered.
+
+# Algorithm 
+1- visit the root of the tree and print it 
+
+2- if the root have childes print the childe on the left then on the right 
+
+3- go to the level below and repeat the above for each node 
+              1
+          2      3
+       9     5 6    7
+
+
+# Beusedo code 
+
+input :🌴tree
+output : elemnt of tree 
+
+# Big O🌴 :
+O(n)
+helping link :[https://www.educative.io/edpresso/how-to-implement-a-breadth-first-search-in-python]
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..ca1d6fe
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,327 @@
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diff --git a/pyproject.toml b/pyproject.toml
index 86421c1..651e9a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,7 @@ authors = ["JB <jb.tellez@gmail.com>"]
 
 [tool.poetry.dependencies]
 python = "^3.8"
+binarytree = "^5.1.0"
 
 [tool.poetry.dev-dependencies]
 pytest = "^5.2"
diff --git a/tests/challenges/test_binary_search.py b/tests/challenges/test_binary_search.py
new file mode 100644
index 0000000..e69de29