Uber CEO Travis Kalanick parties with kids in San Francisco

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Uber Chief Executive Officer (CEO) Travis Kalanick (R) compares skewers with fourth grader Gabriel Sullivan (L) during Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.

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Uber head of global operations Ryan Graves (R) eats with fourth grader Frederick Dozier during Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.

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Uber Chief Executive Officer (CEO) Travis Kalanick works with fourth graders during Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.

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Uber Chief Executive Officer (CEO) Travis Kalanick (L) and head of global operations Ryan Graves (R) eat with fourth graders Viktor Marchis-Vacker (2nd L) and Snit Tecle (2nd R) during Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.

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Uber Chief Executive Officer (CEO) Travis Kalanick (2nd R) works with fourth graders during Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.

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Uber Chief Executive Officer (CEO) Travis Kalanick (2nd L) works with chef Amy Kien, of Revolution Food, to help with Cooking Matters, a nutrition class taught by 18 Reasons, a local partner of Share our Strength at Glen Park Elementary School in San Francisco, California.