First Aid Basics and Road Safety

• In Wayang Kulit shadow puppetry, the "dalang" narrates, voices characters, and manipulates puppets
• Cultural values commonly portrayed in Southeast Asian traditional epics: bravery, loyalty, and upholding tradition

Health and Safety

• The goal of first aid is to provide immediate care before professional help arrives
• Good first aiders are observant, gentle, and resourceful
• Check the scene first if witnessing a car accident
• It is important not to give an unconscious victim food or drink because they might choke
• In first aid, the acronym "ABC" stands for airway, breathing, and circulation
• Learning Cardiopulmonary Resuscitation (CPR) can help save a life in case of cardiac arrest
• Perform the Heimlich maneuver if someone is choking
• Elevating a bleeding wound helps slow down bleeding
• "Self-management" in road safety means taking care of yourself and making responsible decisions to avoid accidents
• Texting while driving is a visual distraction
• Driving under the influence of alcohol or drugs puts lives at risk by impairing judgment/reaction time, causing accidents/injuries and can lead to legal consequences
• Seatbelts prevent passengers from being ejected during a crash
• If tired while driving, pull over to rest
• Check water quality before swimming in open water to avoid a swimmer's itch and infections
• Swim away from jellyfish in the ocean
• When swimming alone, inform someone of your location and return time, so they can call for help if needed
• Hypothermia occurs when the body loses heat faster than it can produce
• Musculoskeletal injuries: sprain, fracture, strain
• If someone falls and injures their ankles, first assess the situation and check for responsiveness
• Cold compresses: a bag of frozen vegetables, a wet towel, or a cold can of soda

Red River Valley Folk Dance

• This dance promotes community bonding through collective participation and interaction
• The dance originates from the Red River Valley of the North
• Traditional costumes include gay printed or checkered skirts and white blouses
• Dancers are arranged in groups of three facing each other

Factoring Polynomials

• To factor $x^2 + bx + c$, find numbers $r$ and $s$ where $r + s = b$ and $rs = c$
• Example: $x^2 + 5x + 6 = (x + 3)(x + 2)$, $x^2 - 5x + 6 = (x - 3)(x - 2)$, $x^2 + 5x - 6 = (x + 6)(x - 1)$, $x^2 - 5x - 6 = (x - 6)(x + 1)$
• The factors must be of the form $(2x \pm a)(x \pm b)$

Factoring difference of squares

• $a^2 - b^2 = (a - b)(a + b)$
• ex: $4x^2 - 25 = (2x - 5)(2x + 5)$

Factoring cubes

• $a^3 - b^3 = (a - b)(a^2 + ab + b^2)$
• $a^3 + b^3 = (a + b)(a^2 - ab + b^2)$
• ex: $x^3 - 8 = (x - 2)(x^2 + 2x + 4)$, $x^3 + 8 = (x + 2)(x^2 - 2x + 4)$

Extra Example

• $x^5 - x = x(x^4 - 1) = x(x^2 - 1)(x^2 + 1) = x(x - 1)(x + 1)(x^2 + 1)$
• $(x + 1)^2 - 4 = ((x + 1) - 2)((x + 1) + 2) = (x - 1)(x + 3)$
• $x^4 + x^2 - 6 = (x^2 + 3)(x^2 - 2)$

Polynomial Division

• Steps for dividing polynomials are shown relating to the equation: $(x^3 - 3x^2 + 4x - 5) / (x - 2)$
• Example Answer: $x^2 - x + 2 - \frac{1}{x - 2}$