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transform="translate(569 123)"><rect class="sb3-comment-line" transform="translate(-12 9)" x="0" y="0" width="12" height="2"/><rect class="sb3-comment" x="0" y="0" width="120" height="20" rx="4" ry="4"/><text class="sb3-label sb3-comment-label" transform="translate(8 4)" x="0" y="13"> the radius is 1</text></g></g></g><g transform="translate(2 461)"><path class="sb3-variables" d="M 0 4 A 4 4 0 0 1 4 0 H 12 c 2 0 3 1 4 2 l 4 4 c 1 1 2 2 4 2 h 12 c 2 0 3 -1 4 -2 l 4 -4 c 1 -1 2 -2 4 -2 L 381 0 a 4 4 0 0 1 4 4 L 385 60 a 4 4 0 0 1 -4 4 L 48 64 c -2 0 -3 1 -4 2 l -4 4 c -1 1 -2 2 -4 2 h -12 c -2 0 -3 -1 -4 -2 l -4 -4 c -1 -1 -2 -2 -4 -2 L 4 64 a 4 4 0 0 1 -4 -4 Z"/><text class="sb3-label sb3-" transform="translate(8 25)" x="0" y="13">set</text><g transform="translate(48 16)"><rect class="sb3-variables sb3-input sb3-input-dropdown" x="0" y="0" width="80" height="32" rx="4" ry="4"/><text class="sb3-label sb3-literal-dropdown" transform="translate(11 9)" x="0" y="13">EstPI</text><use 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a 4 4 0 0 1 -4 4 L 48 48 c -2 0 -3 1 -4 2 l -4 4 c -1 1 -2 2 -4 2 h -12 c -2 0 -3 -1 -4 -2 l -4 -4 c -1 -1 -2 -2 -4 -2 L 4 48 a 4 4 0 0 1 -4 -4 Z"/><text class="sb3-label sb3-" transform="translate(8 17)" x="0" y="13">set</text><g transform="translate(48 8)"><rect class="sb3-variables sb3-input sb3-input-dropdown" x="0" y="0" width="60" height="32" rx="4" ry="4"/><text class="sb3-label sb3-literal-dropdown" transform="translate(12.5 9)" x="0" y="13">PI</text><use transform="translate(36 13)" xmlns:NS7="http://www.w3.org/1999/xlink" NS7:href="#sb3-dropdownArrow"/></g><text class="sb3-label sb3-" transform="translate(116 17)" x="0" y="13">to</text><g transform="translate(137 8)"><rect class="sb3-variables sb3-input sb3-input-number" x="0" y="0" width="445" height="32" rx="16" ry="16"/><text class="sb3-label sb3-literal-number" transform="translate(11 9)" x="0" y="13">3.1415926535897932384626433832795028841971493993</text></g></g><g transform="translate(2 113)"><path class="sb3-sensing" 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4 L 48 48 c -2 0 -3 1 -4 2 l -4 4 c -1 1 -2 2 -4 2 h -12 c -2 0 -3 -1 -4 -2 l -4 -4 c -1 -1 -2 -2 -4 -2 L 4 48 a 4 4 0 0 1 -4 -4 Z"/><text class="sb3-label sb3-" transform="translate(8 17)" x="0" y="13">Monte</text><text class="sb3-label sb3-" transform="translate(57 17)" x="0" y="13">Carlo</text><text class="sb3-label sb3-" transform="translate(100 17)" x="0" y="13">with</text><text class="sb3-label sb3-" transform="translate(133 17)" x="0" y="13">point</text><text class="sb3-label sb3-" transform="translate(173 17)" x="0" y="13">number</text><g transform="translate(235 4)"><rect class="sb3-sensing" x="0" y="0" width="76" height="40" rx="20" ry="20"/><text class="sb3-label sb3-" transform="translate(12 13)" x="0" y="13">answer</text></g></g><g transform="translate(2 209)"><path class="sb3-looks" d="M 0 4 A 4 4 0 0 1 4 0 H 12 c 2 0 3 1 4 2 l 4 4 c 1 1 2 2 4 2 h 12 c 2 0 3 -1 4 -2 l 4 -4 c 1 -1 2 -2 4 -2 L 341 0 a 4 4 0 0 1 4 4 L 345 44 a 4 4 0 0 1 -4 4 L 48 48 c -2 0 -3 1 -4 2 l -4 4 c 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0 a 4 4 0 0 1 4 4 L 428 52 a 4 4 0 0 1 -4 4 L 48 56 c -2 0 -3 1 -4 2 l -4 4 c -1 1 -2 2 -4 2 h -12 c -2 0 -3 -1 -4 -2 l -4 -4 c -1 -1 -2 -2 -4 -2 L 4 56 a 4 4 0 0 1 -4 -4 Z"/><text class="sb3-label sb3-" transform="translate(8 21)" x="0" y="13">say</text><g transform="translate(48 4)"><rect class="sb3-operators" x="0" y="0" width="229" height="48" rx="24" ry="24"/><text class="sb3-label sb3-" transform="translate(12 17)" x="0" y="13">join</text><g transform="translate(45 8)"><rect class="sb3-operators sb3-input sb3-input-string" x="0" y="0" width="110" height="32" rx="16" ry="16"/><text class="sb3-label sb3-literal-string" transform="translate(11 9)" x="0" y="13">Estimate pi: </text></g><g transform="translate(163 4)"><rect class="sb3-variables" x="0" y="0" width="62" height="40" rx="20" ry="20"/><text class="sb3-label sb3-" transform="translate(12 13)" x="0" y="13">EstPI</text></g></g><text class="sb3-label sb3-" transform="translate(285 21)" x="0" y="13">for</text><g 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y="13">-</text><g transform="translate(87 4)"><rect class="sb3-variables" x="0" y="0" width="39" height="40" rx="20" ry="20"/><text class="sb3-label sb3-" transform="translate(12 13)" x="0" y="13">PI</text></g></g></g><text class="sb3-label sb3-" transform="translate(255 25)" x="0" y="13">/</text><g transform="translate(267 12)"><rect class="sb3-variables" x="0" y="0" width="39" height="40" rx="20" ry="20"/><text class="sb3-label sb3-" transform="translate(12 13)" x="0" y="13">PI</text></g></g><text class="sb3-label sb3-" transform="translate(322 29)" x="0" y="13">*</text><g transform="translate(336 20)"><rect class="sb3-operators sb3-input sb3-input-number" x="0" y="0" width="49" height="32" rx="16" ry="16"/><text class="sb3-label sb3-literal-number" transform="translate(11 9)" x="0" y="13">100</text></g></g><g transform="translate(442 24)"><rect class="sb3-operators sb3-input sb3-input-string" x="0" y="0" width="40" height="32" rx="16" ry="16"/><text class="sb3-label 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diff --git a/contents/monte_carlo_integration/code/scratch/InCircle.svg b/contents/monte_carlo_integration/code/scratch/InCircle.svg
new file mode 100644
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diff --git a/contents/monte_carlo_integration/code/scratch/monte_carlo.txt b/contents/monte_carlo_integration/code/scratch/monte_carlo.txt
new file mode 100644
index 000000000..117ee78a2
--- /dev/null
+++ b/contents/monte_carlo_integration/code/scratch/monte_carlo.txt
@@ -0,0 +1,22 @@
+<(((x) * (x)) + ((y) * (y))) < ((radius) * (radius)) >
+
+
+define Monte Carlo with point number (num)
+set [Count v] to (0)
+repeat (num)
+    set [x v] to (pick random (0.0) to (1.0))
+    set [y v] to (pick random (0.0) to (1.0))
+    if <(((x) * (x)) + ((y) * (y))) < ((radius) * (radius)) > then // the radius is 1
+        change [Count] by (1)
+    end
+end
+set [EstPI v] to ((4) * ((Count) / (num)))
+
+when @greenflag clicked
+set [PI v] to (3.1415926535897932384626433832795028841971493993)
+ask [Number of point?] and wait
+Monte Carlo with point number (answer)
+say [Pi estimate done.] for (2) seconds
+say (join [Estimate pi: ] (EstPI)) for (2) seconds
+say (join [Real Pi: ] (PI)) for (2) seconds
+say (join [Percent Error: ] (join ((([abs v] of ((EstPI) - (PI))) / (PI)) * (100)) [%])) for (2) seconds
\ No newline at end of file
diff --git a/contents/monte_carlo_integration/monte_carlo_integration.md b/contents/monte_carlo_integration/monte_carlo_integration.md
index c3a50dd36..92b47bd13 100644
--- a/contents/monte_carlo_integration/monte_carlo_integration.md
+++ b/contents/monte_carlo_integration/monte_carlo_integration.md
@@ -91,6 +91,10 @@ each point is tested to see whether it's in the circle or not:
 [import:2-10, lang:"bash"](code/bash/monte_carlo.bash)
 {% sample lang="kotlin" %}
 [import:3-3, lang:"kotlin"](code/kotlin/MonteCarlo.kt)
+{% sample lang="scratch" %}
+<p>
+    <img  class="center" src="code/scratch/InCircle.svg" width="314" />
+</p>
 {% endmethod %}
 
 If it's in the circle, we increase an internal count by one, and in the end,
@@ -189,6 +193,11 @@ Feel free to submit your version via pull request, and thanks for reading!
 [import, lang:"bash"](code/bash/monte_carlo.bash)
 {% sample lang="kotlin" %}
 [import, lang:"kotlin"](code/kotlin/MonteCarlo.kt)
+{% sample lang="scratch" %}
+The code snippets were taken from this [scratch project](https://scratch.mit.edu/projects/319610349)
+<p>
+    <img  class="center" src="code/scratch/Algorithm.svg" width="589" />
+</p>
 {% endmethod %}
 
 <script>